You can fail to mention critics without copying anyone. For example, doing nothing at all satisfies both conditions.
Maybe you meant failing to cite authors you quote? That's not what the OP is talking about.
Maybe you meant failing to cite authors you quote? That's not what the OP is talking about.
Of course you can just not write about your critics in the first place, but I don't think that's OP's intent, as that would be a huge nothing burger of a tweet.