I've been watching ZFG play the remake. They've got an insane amount of knowledge of the game from decades of 100% speedruns, and keep pointing out like "oh hey, this pot used to contain a fairy" which is really interesting. Highly recommend watching that playthrough.

So far the main criticisms I agree with are:

• Rupees are artificially scarce. Most farming spots are gone, and most 50 and 20 rupees are replaced with 5's. You're very poor in the remake. Plus prices are increased as well for some reason. Bugs no longer sell for much either. No drawbridge chains rupees. The castle pot room contains only 1's. Etc. General economy problems
• A lot of little secrets are either completely removed, or extremely obvious. Like the lava waterfall in dodongo cavern, grottos, shooting the gallery sign, etc. Everything is highlighted and shown to the player so you cannot possibly miss it (yellow paint)
• Lots of fun movement tech and combat options were removed or made clunky. Rolling has no invincibility frames and is slow, making it pointless. Spin attack is much slower and short range. Jump attack shorter range. Back walk and side hop are now slower than walking
• You have to hold A to sprint, which hurts your thumb. There is no toggle sprint.
• A lot of sequence breaks were patched. E.g. you cannot backflip to get the heart piece early above dodongo cavern. Hookshot is severely nerfed, you can only hook specific targets and climbable surfaces, not wooden textures. You basically have to do everything the intentional way; they really went out of their way to patch every single possible sequence break, even the very minor ones like for every heart piece and golden skulltula. Though you can still do dungeons in any order.
• Horse controls are annoying breath of the wild controls.
• You can only have one item "ready" at any time. They use the horrible recent Zelda game menu where every item is in one long list to select it. Luckily there's not THAT many items to scroll through.

Of course there's many good points as well. Graphics, voice acting, quality of life improvements, bonus lore, etc, make it a genuinely good remake. But it also feels like it lost a bit of it's soul in the upgrade.