Helps also that Apple never believed in desktop shortcuts the way Windows does. At best you get your external and internal disks there and that's pretty much it.Apple sloved this with Stacks and it's a excellent feature.
Apple does allow to remove all the security restrictions on macOS. Go into recovery mode and into terminal and you can disable SiP. In fact Macs also allow third party kernels even on M1 and is supported by Apple.
Unfortunately, it does not remove all restrictions. You still cannot remove things like the Mac App Store, or apps that feel far more fitting to an iPhone (Maps, Books, etc) and you still cannot sideload an older MacOS app that would otherwise be compatible. It did however, let me change the icons to the pre-Yosemite look, as well as remove the notification center entirely and permanently block all updates by editing HOSTS.