I don't really think is an ad hominem fallacy. An ad homihem fallacy is when you attack the person making an argument rather than the argument. But no one here is attacking the people making the argument.
The argument is "Trust DDG". That argument is being attacked as "DDG's founder has done bad stuff in the past, it's likely DDG will do bad stuff, so I won't trust it". That seems to be attacking the argument to me, thus not an ad hominem.
[My opinion on trusting DDG] - [Reason for my opinion on trusting DDG].[More information about the reason]
In this case, because I don't use the "personal attack" to reach my conclusion that the person was wrong, I don't think it would be a case of argument ad hominem.
But if someone read it like this:
[One reason for my opinion on trusting DDG] - [Another reason for my opinion on trusting DDG].[More information about the second reason]
Then I am using the "personal attack" to reach my conclusion that the person was wrong, so I think it would be a case of argument ad hominem.
My comment wasn't written very well, and I'll try to write better comments in the future. Not that adding an ad hominem to a valid argument makes it invalid, I guess?. But it's still good to avoid fallacies, and to write one's comments so they're likely to be understood the way one meant them.
That’s not an ad hominem attack. The comment didn’t say that the person’s argument is wrong because that person is silly. Clearly the comment is saying that the argument itself is silly.
The intent of the comment was probably not ad hominem, as if it were rephrased like "trusting ddg is silly" because then silly is modifying the act of trusting. But as-written, silly is modifying anyone (a person) without distinguishing whether silliness is the cause or the effect; if silliness is the cause of the trust then it's an ad hominem attack. It would be more clear-cut if instead of "silly" they said "low intelligence."
A common fallacy I see, though I don't know if there's a name for it, is assuming that just because what someone is doing can be described by the name of a fallacy that what the person is doing is fallacious.
> Argument from fallacy is the formal fallacy of analyzing an argument and inferring that, since it contains a fallacy, its conclusion must be false. It is also called argument to logic (argumentum ad logicam), the fallacy fallacy, the fallacist's fallacy, and the bad reasons fallacy.
I'm talking about situations where no fallacy has actually occurred, not situations where a fallacy has occurred but a correct conclusion has been arrived at anyway.
So what does any fallacy tell me then? Especially the fallacy fallacy? If it does invalidate the invalidation of fallacies it is in itself untrue...bz...recursion error..bz stack overflow
The argument is "Trust DDG". That argument is being attacked as "DDG's founder has done bad stuff in the past, it's likely DDG will do bad stuff, so I won't trust it". That seems to be attacking the argument to me, thus not an ad hominem.