I think I would kinda let it ride over me, my Ash is a big boy, but it does not bother me if anyone comments, I usually laugh and say yeah I know he is a big boy isn't he?

I Think I would feel worse is someone said" my your cat is skinny," then I would feel they think I am neglecting him or starving him. so don't worry your babies are perfect in your eyes and that is all that matters.