Maybe you can

There is no such thing as idiot-proof steps to tamper the registry. Most of those registry keys are not documented, and it’s very hard to be completely sure about what you are touching.

If you need a debloated experience, install LTSC.

I had a look at Haiku some months ago. Its single user architecture is an interesting choice. I mean, you don’t need to worry about privilege escalation exploits, if you are always fully privileged /s