Could you elaborate? I've used sneasler and, while what is essentially better Hawlucha is pretty scary, I find the eternal dilemna of setting up Attack or Speed really gets you in this fast-paced metagame. Often I feel forced into 50/50s where I essentially just guess whether the opponent is going to switch to BE Valiant and I should CC and then Gunk Shot or switch to Ghold and I should SD and then Lash Out next turn to KO. If I predict wrong and SD on the Valiant or CC on the Ghold, I'm forced to switch out because they can KO or cripple Sneasler. I also found that Sneasler has a plethora of midgame checks that can take it on when healthy- Landorus-T(usk) are the biggest ones ofc but also Garchomp, Dragapult, Moth, Rotom, etc. that can all switch in relatively safely on Sneasler regardless of what it does and force it out. Most of these Pokemon are frail, so Sneasler can eventually beat them, but they make it so that Sneasler can't just set up immediately and win. We also have 2 excellent defensive poisons, Pex and Glowking, which can wall any Sneasler that doesn't commit to Tera Ground. It's also not the best at switching in due to low defensive stats. So, yes, sneasler is pretty scary to stop once it has gotten into the sweep, but I find its numerous flaws make it hard to find opportunities to get into that position.
lmao