Who is surprised?
6 points
On Arch you can easily uninstall Linux.
The fun part is that there are even legit reasons to do so, the by far most likely one being that you want to use a different package that provides you with a kernel, such as linux-lts or linux-hardened. Definitely know what you are doing in that case though!
11 points
Linux in general and Arch in particular are kinda laissez-faire in that they’ll allow you to shoot yourself in the foot. Some distros may put barriers in your way, others practically hand you the gun, but at the end of the day, the gun is freely available and it’s your own foot that you’re shooting.