Baldur's Gate is a city in the Forgotten Realms setting of Dungeons and Dragons.
It's not just two games that came out many years ago.

And to me the magic of the setting is there in spades. Remember first time you played BG1? Act1 didn't have a lot of atmosphere either. After watching your father die at the hands of evil doers you are off to investigate an iron shortage.
I think for me the "magic and atmosphere" was in the fact that it was something very "new" to me, never really seen before. I think this is why many people talk about the rose colored glasses.

I would say though: I wish and hope that after act 1 that we get a bigger world to explore.

On some of your other points:

Leveling: Did ADnD really have a lot more choices at level up? I seem to recall some classes only getting HP. DnD isn't a huge "player choice on level up" sort of game. Your biggest choice is done at lvl 1, and then sometime before level 3 you pick a sub class. Clerics pick it at character creation, most other classes pick it at level 3.
Some subclasses get more choices later on. Level 6 usually has a choice for some.
Spell casters usually get the most choices, since they get spells on level up.
The game is missing some components of 5e though, which I think adds to the feeling of few choices, or rather meaningfulness to level up. Rogue level 2 is gutted because Larian gave all of the Rogues ability to everyone.

Jumping: Jumping isn't the problem, jumping as a bonus action is.

Ammo count: Seriously? Does anyone ever miss ammo count? Wow. It makes some sense on the tabletop where resource management matters a lot more, but in a computer game it tends to end up just being an annoyance. there's a reason most games does away with it.

"Reskinned Divinity": This one I never get. Sure it has some surface level similarities. But the game mechanics are different. The atmosphere is different. The way social interactions work are different. This feels very little like Divinity and a whole lot like DnD (Which I gather you don't play?)