>>52922421because they have no fucking foresight.
In a vacuum, losing a team member and having just a buffed fat fuck would be a downside, but then they gave it the ability to boost a stat based on which fish it ate, they gave it body press to make the defense one viable, and it being already bulky doesn't help, not only just by having the 2 on your team, you have to have pokemon to answer them, which is why we have the cancer bird himself murkrow a mandatory counter option. And then they didn't realize you could toxic chees the fish and have the buffs and another mon. and the stupid 50/50 reads, if they have the fish on the field but not dozo, you are HEAVILY discouraged to attack into it because one swap and they dodge an attack and get a fat boy for no cost, which they use to their advantage to not swap out, protect with their mon, and throw a strong hit from the fish.
They gave it too much potential, and because of it, the entire game has to play around it.
And whoever the fucker is that thought tailwind has no counterplay once it's up needs to be offed from ever making game content.