I’ve seen the occasional PC dwarf over my 43 years of playing, mostly because it’s me playing them, but I don’t think anyone would really miss them if they weren’t there. Only the people who always come out and say “how dare you change ANYTHING!!!” would object to their absence.
I’m pretty sure that if Gygax had not been persuaded to include them by the popularity of LotR in the 1970s, no one would be saying “what this game really needs is a species of short angry miners with long beards and Scottish accents”.