Hmm, no. Quoting Wikipedia [0], ad-hom "refers to a rhetorical strategy where the speaker attacks the character, motive, or some other attribute of the person making an argument rather than addressing the substance of the argument itself. The most common form of ad hominem is "A makes a claim x, B asserts that A holds a property that is unwelcome, and hence B concludes that argument x is wrong". "
The person's ideology is precisely an "attribute of the person making an argument". The sentence I responded to basically states that "A is not making their argument because it's true, but because of A's unwelcome characteristic." This is pretty much textbook ad-hominem.
The person's ideology is precisely an "attribute of the person making an argument". The sentence I responded to basically states that "A is not making their argument because it's true, but because of A's unwelcome characteristic." This is pretty much textbook ad-hominem.
[0] https://en.m.wikipedia.org/wiki/Ad_hominem