Warning -- poster is a Latin teacher.

Nihil nisi bonum -- nothing but good (about the dead), an ancient custom. The word obit means "he/she has gone"("-it", as in transit, exit, and inITiate), plus ob-, which can be in contrast, against, finally, or because of. So obit is really a latin word which could loosely be translated as "because of {this} he (or she or it) has gone", or "he/she has gone in a final way". It's the exactly right name for these threads, and I agree that a little decorum and respect, both for the lamented and the lamenters, would be a good thing.

I'm a good old Latin teacher, and that's just what I am
And for this modern lingo, I do not give a damn....