I don't think the bosses are meant to be the puzzles in Zelda, the non-fighting parts of the dungeons are. I'm not really a fan of Zelda games though so I'm not fighting their corner here.

I don't find Elden Ring puzzling, but maybe I haven't played enough. From what I've seen so far it's more trial and error and than figuring stuff out, which I find boring.

Skill trees in general I think are bit of a cop out in most action games, let alone having to decipher them. I'll reach for 4X games like Stellaris or Civ if I want to sit and think about how stats affect outcomes.

Yeah boss battles are usually pretty easy in Zelda, as you say, 3 hits and done most of the time. They're traditionally about getting the player to master the technique or item you've just unlocked. Have you tried running straight to Ganon if BotW or tackling The Depths in TotK though? I don't think either of those tasks could be considered simple.

Surprised you only like the first one, the games are constantly innovating in terms of gameplay and design, but the first is a pretty standard affair. A lot of the time the simplicity is what enables the fun, fluid gameplay as with most games Nintendo put out.

If I want a challenge I'll play online shooters or pretty much any roguelike where when I die I don't come away feeling it was unfair. Tbh I think I just don't enjoy modern action RPGs in general rather than it being a specific Elden Ring criticism. I find they try to cater to lots of mechanics that other games implement better but fully aware that's an unpopular opinion.