Nope, it's a fail rant that kids pull of their ass to justify why you didn't win or to take the fun away from winning a match, despite actually winning.I don't see why you hate Karen's little spiel so much. Like her speech is basically the definition of the game: Use your favorites to win. If we didn't try to play with our favorites, the games would be so boring lol.. This beach guy gives a nice little speech that goes hand in hand with competitive aspects, but Karen's philosophy literally defines the game of Pokemon.
You make a team to check stuff in the meta and work around its threats, then you get called a tryhard for using team synergy instead of using fucking sunkern or pachirisu since they are supposed to be your favorites.
In the end that garbage fallacy is the justification of these kids to rant about you using stuff like chessnaugth to cocblock a huge portion of the game in a team lineup and being called a tryhard.
Or to criticize you for not using stuff that are weak to their team, making you are a tryhard(again) that doesn't use his favorites. That's the approach the community uses for the garbage speech, people spawn the typical "use pachirisu or X unviable pokemon for your planned team composition just because of their design or some sort of furry waifu roleplay thing they have going" and justify it with said speech, and then berate you if you don't agree.
Let's also not disregard the improbably cool legends wich designs are likeable as hell... Unless you look like male genitalia (poor palkia) they are the favorite of many, so why not using those? Welp aside being broken as hell and ruining the team building process for many, oh also it isn't fair to use box legends or legends like Landorus in any case as they ruin the fun for the Karen speech guys who want to make a 6 female shiny eeveevolution waifu squad.
The Karen speech was decent back then, but now it's just a terrible thing on the franchise.