What an absolutely bizarre thing to say.
This is a technology forum, and one of the (for lack of a better term) 'fathers of innovation' of the entire industry has just died.
I can't think of a much better reason to have your signature as this for a little while (if you want to, of course), my family members dying would have absolutely no bearing on this forum at all, nor would they care or want to be put in signatures.
Comments like the ones you (and others) have made are just the usual smart-arse remarks people say on here all the time, trying to make themselves look 'cool', that is far more embarrassing than a signature, I promise you.