Amen. I have 850 hours logged between DOS 1 and 2, and I have played a bit of 5e. I agree, most of the suggestions/outrages are either DOS players not liking 5e rules (spell slots especially, resting, skill checks/saving throws, etc.)
OR they are 5e players who don’t like regular RPG style mechanics, aka searching through individual containers, inventory management, etc.

Can’t win I guess lol