Sure, and I can't really blame anyone. Like in my current setting I combined elves and halflings into one species of small elf-like creatures who have horns and tails, and that definitely will come across as 'trying too hard' to some.
But then again I feel it a bit weird if such cosmetic things are
needed for the species to be worth including. I don't think that having horns or scales in itself makes anything particularly interesting.
And ultimately D&D is D&D. I can make such drastic redesigns for my own setting, but a big part of D&D's mass market appeal is having recognisable tropes. Halflings are a well known fantasy trope, so people expect to have them in D&D, it's simple as that.