If a champion's counterplay is "punish him when his player does something stupid"
It isn't counterplay
EDIT: To clarify. Saying, "wait for X players to fuck up when they Y, X players always fuck up that way. Then punish them." So then X player says, wow, okay. I just won't do that mistake. Suddenly the "counterplay" to that ability doesn't exist.
An example might be an argument on whether Zed is ungankable most of the time due to his shadows.
"just wait for him to waste his shadow while he doesn't have wards up, then you can finally gank him. Zed players always waste their shadow so you can gank them." Okay. So if he makes a stupid mistake, then he becomes as vulnerable as the majority of other midlaners in the game (having only flash)? And if he only uses shadow recklessly while he has wards up, he's allowed to be immune to ganks?
That's not counterplay. That's, "hope your enemy plays their champion badly."
have tons of damage to make up for it. Have CC to make picks when it is needed, usually this CC isn't tied to ults like most mobile champions.
tend to have strong early games, but require a form of snowball to get ahead. Most also tend to be melee or short ranged. In other words their mobility is to make them have a chance at catching these high damage, and usually long range characters.