The thing about "cancerous/toxic/antifun" champs

I could easily see the boards stick these labels on anyone. And that's not a problem with the champs, it's how a game like this has to work. Champions are supposed to be able to express themselves, and they're supposed to be able to do things. And if they're doing things to you, you aren't going to enjoy it. But wait, you're playing a champ too, so you can do things to the champ that's doing things to you!

Hitting them back is a valid form of counterplay. That adc right clicked on you? That's what they do. Either kill them or tank their damage or go do whatever you're supposed to do if it's neither of those things.

A lot of the time you also have tools to not let the other champ do what they want to do. That Morg wants to bind you? Dodge it and fight her. That Vlad wants to harass in lane? All-in his ass. That Nasus wants to farm? Harass him. That's how a pvp game has to work. If you're complaining that your enemy laner got on you, barfed out damage, and got away without a scratch you should wonder why you weren't doing something to him.

There are a couple champs that kinda deserve these labels (i feel so dirty playing vlad) but for the most part these guys are also what pushes players to improve. But we certainly don't need to put these labels on every fotm and everything that gets played by the pros.