>>46906213>Typhlosion isn’t useless, but there’s so many Pokémon that do it’s job much better than it that there’s no reason to use it compared to them.This is the important thing.
You can still use Typhlosion and win games. But you're not using Typhlosion because it's the best tool for the job. You're using it because you like it.
If your intent is just to have fun using your bro, there's nothing wrong with that. If your intent is to win games, you should use something else.
This is also why Pachirisu isn't an example of this. Even if we pretend OP is referring to low tier mons in general and not just Typhlosion, Sejun Park used Pachirisu with the intent of winning games.