For blocking updates altogether: https://www.sordum.org/9470/windows-update-blocker-v1-7/

For only blocking reboots: https://majorgeeks.com/files/details/windows_10_reboot_block...

Do not disable updates. When (not if) it gets compromised your machine will become a launch pad to damage other machines on the internet.

If you really disagree move to Linux, you'll still have updates but you decide when to apply them.