Except when you are "updated" from a full, paid version to a spyware/adware-ridden version.

Seriously: I think Windows 10 is great, technically and usability wise.

But MS need to learn that they can't have it both ways:

Paid xor ads. (I can think of two exception: inside the store app and inside settings for onedrive.)

There is no good reason to excuse Microsoft for maliciously disguising updates as security patches in order to manipulate the non tech-savvy into switching to their new unprecedentedly invasive OS. Especially when, as you said, the UI is worse.

The entire UX of Windows 10 is worse, every time I have to use it for something I get physical anxiety from claustrophobia.

I really don't like that I have to install untrusted 3rd party software on my computer in order to prevent my operating system from automatically ruining my user experience and spying on me.