Windows Updates, when they are correctly downloaded and installed, make your computer better, safer, and easier to use.
There are, however, some rules about downloading the updates but before we get to that let us discuss the Microsoft Update Assistant. Can you uninstall it. Yes. Permanently? Yes. It won't affect the updates but you can remove that specific app any time you
like. Mostly what it provides is an easy shortcut to see if you are up to date. You click on it and see this 90% of the time:
which is always nice to know that you have the latest version. If you didn't it would direct you to update your device. And, possibly assist you in doing so. I really don't know. I've never actually used it for anything.
To uninstall: Right click on the icon in your app menu and select uninstall. This will take you to your control panel/programs and features/ uninstall screen where you will see the updater.

Right click and select uninstall again which takes you to this screen:

Select uninstall once more. The app is now gone for good unless you choose to reinstall it.
But, as I said. Your computer will still update. One issue seems to be that users have 3rd party software running, third party antivirus and registry editing programs especially which can really foul up your O/S causing updates to not install properly, fail
outright, and...in worst case scenarios cause their device to fail to roll back or even start up in the normal way.
And then they get mad at Microsoft. Well, fine. If you're mad at that company contact THEM and tell them. Microsoft Corporation
Don't tell us in the community. We voluntarily spend our time helping others so they can save a few bucks when something goes wrong rather than calling The Geek Squad or whoever and blowing their life savings.
We don't work for Microsoft. Except for Forum Moderators we aren't even LOOSELY connected with Microsoft.
And when you waste words telling us how much you hate Microsoft we wonder why you don't just go buy a different computer with a different operating system. Or build your own and install an open source O/S on it...whatever.
We will try and help...but we won't wade through a ton of trash talk to do it.