I completely agree with most of it - there are 2 minor mistakes in there:
1. D&D getting up from prone is not an action, its just half your movement in 5e.
2. 5e Shove is based is something you can do instead of one ATTACK (not attack action nor a full action - still it being a bonus action is inacceptible) and it is based on atheltics vs atheltics/acrobatics - not basic strength/dexterity.
Besdies that I think the feedback is extremely valid. Add to it the horribly wrong treatment of stealth and you have most of the biggest balance issues listed right here. There are a lot of minor issues as well, but none of them as impactful, just unnecessary and not improving the game what so ever.
When it comes to magic items I don't mind them. I have barely seen any that are really crazy or that useful. Sure in 5e the rate is usually slower, but you can balance it out with encounter design (which currently is just bad due to the Larian homebrew dominatiing the game).
