That makes no difference - the argument is not about the points being raised, but rather the worth of engagement with the poster who is raising them - or in the case of bullshit, pretending to raise them.
Which makes it an argumentum ad hominem: the person is trying to devalue the worth of the points, or ignore them entirely, through an attack on the character of the person.
The faith of the poster is directly relevant, and a valuable criterion for making that decision. The argument is sound, not an ad hominem argument.
The argument is not sound, for one because the premise of bad faith is false. Secondly, ad hominem arguments are nothing to do with validity of arguments. The fallacy of the ad hominem argument is an
informal fallacy. Being sound is about whether both the argument is valid and the premises true. That in itself doesn’t stop something being an ad hominem argument.
No, it isn't.
See post 140, on the topic of dealing with bullshit.
Btw: That format, that question, is exactly one of my examples of the common circumstances in which the decision to engage with the poster's arguments is a critical matter worthy of discussion.
Whether it is a critical matter or not does not alter the fact that it is an argumentum ad hominem. Not all ad hominems are fallacious, and here you clearly think the ad hominem is a reasonable consideration. I certainly disagree on that point, as it is clear that the intention was simply to avoid those points, not actual discussion in general. But either way, raising an argument against the person, for reasonable reasons or not, so as to avoid, rebut, denigrate, taint, the points the person made is an ad hominem.
As I have posted several times now, when dismissing the relevance of the points raised, regardless of their validity, in making that decision.
Care to put this into an actual sentence, with relevance to the point I raised?
It is relevant to the decision of whether or not to engage with the poster's arguments.
Just as it is a valid argument to make when assessing the likely truthfulness of a witness statement, it doesn’t stop it being an argumentum ad hominem. Your issue seems to be in differentiating between fallacious and non-fallacious examples. But both are still argumentum ad hominems.
Personally I think his was fallacious... a clear attempt not to stop engaging with the poster (see subsequent exchanges) but simply to avoid dealing with those points raised. There was no bullshit, his reasoning may have been valid (e.g. People who engage in bad faith are not worth discussing with; Sarkus is engaging in bad faith; ergo Sarkus is not worth discussing with) but was certainly not sound, and being an argument raised to avoid discussing points, and to do so in a manner that looked to taint those points through an attack on the person’s character, makes it an ad hominem. End of story.
But it is relevant to the decision to engage with that poster, deal with the poster's arguments and points.
So again your issue is whether the argumentum ad hominem is fallacious or non-fallacious. Okay, we can certainly disagree on that in this case, but that doesn’t stop it being an ad hominem.
The argument was not about the points raised by the bad faith poster. It was about the worth of engagement with the points raised by the bad faith poster.
Yes, it is an argument raised to avoid addressing points raised by the poster, not through addressing those points but by raising an attack against the character of the person. The ad hominem can be either a direct rebuttal of the points raised, or simply avoidance of the points, via an argument raised against the person rather than those points.
The “argument” in the argumentum ad hominem does not refer to the argument in which the initial points were made, but the argument that the person seeking to avoid discussing them makes, and that includes examples such as “I am not going to discuss with you because [insert character attack]”.
The [character attack] is the argument for not discussing, or for rebutting, etc. And an argument that seeks to avoid discussion about points raised is indirectly about those points.
"Argumentum ad hominem" is a formal designation, a category of invalid (fallacious) argument.
No, it is an
informal fallacy. Nothing to do with being valid or invalid (although in deductive arguments it is likely to result in an invalid argument).
Most arguments used are not deductive syllogisms but are instead simply “because of X, I do/believe/claim Y”. Ad hominems are not limited to deductive arguments, but apply anywhere an attack on the person is used in an attempt to diminish the strength of their point. And in casting aspersions on whether someone is arguing in good faith to avoid discussing those points, which also serves to possibly taint the strength of those points for others, is an ad hominem. Whether you think it fallacious or not we can keep discussing, if you really want, but it is an argumentum ad hominem.