>>24686778 (OP)
Everyone in the thread is calling him the 3/5 star McDonalds of fantasy: nothing that is going to set the world on fire but tasty and normal to enjoy.
I would say on that, there is one exception which is the worldbuilding. The great about Sanderson for me is the worlds he builds: how the world works, the culture, the unique magic system of that world. Some of his worlds give that Morrowind feel of being immersed into a fantasy setting of alien rules and ideas. It's great.
The worlds are also all connected into one multiverse and basics about how things work are shared between them to the point where once you've read a few you can start picking up on extra details or making educated guesses about how something new shoul work based on previous established rules.
Each world getting it's own style of magic with consistent rules is a big part of that too. Sometimes people do complain that the magic doesn't feel very 'magical', i.e. it's not usually very 'mystic' and it's usually instead more like a set of powers that do very specific things. I'd say I dont go to Sanderson to read about wizards, but Rogues with neat tricks. It makes for good writing and tighter plots, but usually not much 'wonder' in the powers.
Everything else is pretty variable and sloppish, with ups and downs. I do remember feeling weirded out about reading Final Empire and then going back to it years later and finding the writing quality much poorer than I remembered. I think he's an author who has noticably improved going on.
The book I'd probably recommend is Warbreaker: it's a standalone book instead of a trilogy but also not his very first (Elantris) so he's had more practice. I actually found while checking the title that it is free on his website so you might as well just find out for yourself.
https://cdn.shopify.com/s/files/1/0886/8082/5106/files/Warbreaker_hardcover_1st_ed.pdf?v=1723759719
Years later I found that scenes and characters from his two standalone books Warbreaker and Elantris stayed with me far more than the longer series, but I don't know if that's just me and I havent read either in ages so maybe its just nolstalgia and I'm a fool.