You've pulled one sentence out of a subsection and attempted to use it as a definition of the only way for an ad hominem to not be fallacious.
You've quoted from "Conflict of Interest" under the "Circumstantial" fallacy section. Under said section, it is clearly stated, "The circumstantial fallacy only applies where the source taking a position is only making a logical argument from premises that are generally accepted."
Regardless, I rescind my earlier comment because michaelchisari's statement was simply not an ad hominem attack. He wrote:
With such a clear, ideological bias, I would hope that people here would know better than to accept their conclusions without some serious corroboration or fact-checking.
At no point does he argue that what was said is false, only that readers should be skeptical due to evidence of bias and check their facts.
> It's often useful to read more than the first paragraph of a wikipedia article.
Can you name another circumstance under which ad hominem is not fallacious?
As far as I'm aware, disputing an argument from authority is the only non-fallacious use of ad hominem. That's because an argument from authority is dependent on the character of the speaker, and attacking the speaker therefore can debunk the authority.
You've quoted from "Conflict of Interest" under the "Circumstantial" fallacy section. Under said section, it is clearly stated, "The circumstantial fallacy only applies where the source taking a position is only making a logical argument from premises that are generally accepted."
Regardless, I rescind my earlier comment because michaelchisari's statement was simply not an ad hominem attack. He wrote:
With such a clear, ideological bias, I would hope that people here would know better than to accept their conclusions without some serious corroboration or fact-checking.
At no point does he argue that what was said is false, only that readers should be skeptical due to evidence of bias and check their facts.
> It's often useful to read more than the first paragraph of a wikipedia article.
It's never useful to be persnickety.