The burden of proof lies on the nerf-baton-pass camp to show that something is actually broken or uncompetitive here and I'm seriously not convinced at all.
Argument Number 1: Effortless Wins / "Uncompetitive"
First of all you're completely wrong if you somehow think your team is using any effort at all. The best teams and best OU pokemon are partly defined by the fact that they're so good that effort isn't even needed at all:
Talonflame: I suck at teambuilding so yolobird is my one-time click against every threat I forgot about
Keldeo: Let's pair it up with a STAB pursuit user and call it clever
Aegislash: Survives any one hit and rapes something with basically unresistable shadow balls
Rotom-W: I am a very experienced player for considering momentum in my game plan
Bisharp: It's gonna be so sweet when latios gives me that +2 attack I bet this noob wasn't expecting it *dies to crit meteor*
Do you really consider your teams and playstyle to be somehow uniquely creative and thoughtful compared to the other thousands of players out there? You're completely disillusioned if you think "attack with the obvious move OR should I predict the switch??" is using more brain cells than a two sided coin. Every game is also effortless in the fact that you probably have threats on your team that just aren't countered at all by the shitty opponent so all you have to do is randomly trade blows for a few turns to kill off their shaky "checks" and then set up for a sweep. And even if you are one of the best players on the ladder and you're just oozing with pokemon knowledge to the extent that your games are almost algorithmic, then you fit the bill yourself and simply following an algorithm on your way up the ranks. If baton pass teams are somehow yielding wins without hardly any effort put in by the player, it's not because BP teams are broken or OP, it's because well made teams don't require thought by definition. And we should congratulate the baton pass team creators/innovators for putting together such a dominant team.
If random players can do well in tournaments because they brought copy'd baton pass teams, it's because it's a great team. You could copy any of the other tournament-great teams out there (which OF COURSE have plenty of options against baton pass, as well as everything else out there) and also do well in the tourney, because it's a great team, and ANYONE can beat ANYONE. Your mistaken if you think a tournament is the end-all measure of a players skill (and lets just ignore team match up, RNG luck, hax, fifty fifty guessing situations, the shaky competitive definition of pokemon in the first place, speed ties, broken threats that aren't banned yet, win-or-lose-depending-on-my-lead-choice, having the right coverage move or not, etc etc) and if you're insulted because baton pass fared well in a tournament you should sit back and think about it for a few minutes.
Argument 2: It's basically impossible to counter BP
This is crap and you're lazy. How about use TAUNT with a pokemon that can OHKO espeon. Tyranitar? Krookodile? Weavile? Or hell use Mold Breaker taunt on Gyarados and shut it down guaranteed. Don't complain about unviability or whatever, you're just angry that you had to sacrifice a coverage move in order to improve your team's matchup against baton pass and you don't know how to play unless you always have the super coverage move you absolutely needed that one time 20 battles ago. Use perish song, a good hazer, or just plain old use pinsir or mawile from the start and rape everything before the set-ups even become a threat. You can start boosting alongside them on turn 1 with something that can kill vaporeon before it roars. Use explosion to maim them or force the substitute down, nullifies their momentum, and bring in something that threatens. Use slow volt-turns to get your own switch initiatives. Use whirlwind or roar on an unexpected pokemon that usually doesn't use it and bust up the chain. Use ditto. Offense and stall have plenty of options to use and no playstyle is disadvantaged here.
Argument 3: Even if we bring counters to BP they will just adapt
Mr. Mime is killing quagsires with energy ball now? Well then use a better counter jesus christ. Do you think you DESERVE to win against a baton pass team because you put 2 and 2 together and decided to bring haze? First of all, if everything is functioning as intended then you will LOSE half of all the matches you play on showdown. Obviously this isn't the case when you ladder run a great team up through the crap players and crap teams at the bottom, but, ideally everyone will be losing, and losing a LOT when they play. Second, your opponent is probably always just as clever as you. They brought a good team to the ladder and deserve to win just as much as you. Your half assed try at bringing a hazer to the battle doesn't cut it and you should probably reassess your team from scratch and bring 2 or 3 decent useful moves for baton pass (obviously without sacrificing any integrity against the other archetypes on the ladder).
Either you are consistently losing to baton pass, which means you didn't bring any countermeasures to it. Why should you win lol?
Or you are losing about half the time to baton pass, which is good. That's what "should" be happening.
Or you are consistently winning to baton pass, so why would you possibly think it's broken at all? And please share with us how you did it.