All right, let me explicitly substitute for pronouns: your comment was aimed against specific, easily disliked subgroup, namely, "Karen" memes, and so it is unavoidably an attack on the entire group, namely, memes, by association.

It is impossible to say "a "Karen" meme, which is a meme, bad" without implying "memes "Karen" memes, memes bad." Or if there is a way to disentangle them, it certainly won't fit in a comment.

It's amazing how many arguments ad argumentum are not only self-applicable but also self-defying.