Good list! We differ on some of them...

I take issue with the settings menu still relying on the old menus while having shuffled things around so I’m forced to look for settings

This is still an issue, but I feel it's diminishing as they (annoyingly slowly) do move all of the functionality to the new app. It was much worse in Windows 10, I think.

I can say that the start menu is horrendously slow, it can take up to 5 seconds for it to load.

"Works on my machine" is a profoundly unhelpful answer for me to give, but I'm fortunate enough not to have experienced this. If you're looking for a workaround and don't mind a further Microsoft app, the launcher in Powertoys is pretty solid.

Sometimes keystrokes disappear in the start menu only to magically appear some time later.

God, I hate the search from the start menu - but I would say that it's been profoundly broken since Windows 8 and is marginally better in Windows 11.

They made the right click menu worse and only changeable in regedit.

100% agreed. I do think Windows 10 and earlier had a growing issue with the context menus getting unwieldy (Visual Studio is a great demo of how this can get really out of hand) but the solution Windows 11 have brought is annoying more than useful. I suspect at one point I made the registry change and forgot about it, because I'm back to a big Win10-style list.

They made RDP credentials only saveable using CMD.

Agreed again. That said, you're a masochist if you're not using an RDP manager like mRemoteNG! I wish Microsoft had a decent RDP app that wasn't tied into Azure.

They removed vertical taskbars.

I found vertical taskbars incompatible with hotdesking on desks with different monitor configurations, but I do agree this one sucks.

how to unfuck up windows 11 so it works how you expect it to.

I think "how you expect it to" goes to the core of my point - needing to adapt to change isn't inherently bad. But I'm not pretending Windows 11 is a wholesale improvement, and I do concede many of your arguments.