What type of logical fallacy occurs when someone asserts that being loud and crude disqualifies one from offering valid advice?

The assertion that being loud and crude disqualifies someone from offering valid advice is an example of the Ad Hominem logical fallacy. This type of fallacy occurs when an argument attacks a person's character or traits instead of addressing the substance of their argument or idea. In this case, rather than evaluating the validity of the advice given, the focus shifts to the individual's behavior, implying that their mannerisms invalidate any contributions they might make.

Engaging in this fallacy detracts from rational discussion because it bypasses the merits of the advice itself, leaning instead on personal characteristics as a basis for dismissal. Thus, the key element of the Ad Hominem approach is that the argument relies on irrelevant personal attributes rather than the logical content that should be pertinent to evaluating the advice.