If you want to feel real madness try reinstalling Win10 from even the latest installation media, checking for updates, finding none, and then finding your computer restarted the next day with a new iteration of the Bing search box on your taskbar, and repeating this experience at least 4 times.
https://github.com/ChrisTitusTech/winutil
https://www.youtube.com/watch?v=6UQZ5oQg8XA
The defaults are not at all extreme with the knife, it takes away all the advertorial ad-ons and shows how to disable more (including Edge and defaulting to Edge from system links).
Also includes the ability to mod your own ISO to make a lean clean fast install | boot disk for later on or friends.
It's "open" if you read powershell scripts, it's literally just a pipe from a readable GIT reposity to a powershell GUI that toggles scripts that can be read by clicking on [?]'s.
If nothing else you can select the default recommended updates setting which is no new features just security updates.
I don't love having to keep a loaded gun pointed at tower and constantly being on guard with supposedly above-board software but it seems to stay down.