Others simply dismiss the source without commentary. Stating a source is biased based on factual evidence is not ad hominem, as I didn't dismiss the source on that basis, nor did I, in this case, attempt to refute what was presented. I simply stated that calling the writer, Rick Wilson, "conservative" was untrue, as that was stated in the original post.
Rick Wilson, as demonstrated by his recent published works, the general tenor of the Lincoln Project, and his associations is not a conservative. His commentary that was posted following that, I didn't comment on.
Again, that's not "ad hominem."
Now, if I had stated, as examples,
Rick Wilson is a lying sack of shit, or The Lincoln Project is a lying Leftist, useless turd, that would be ad hominem.