@UnfortunateShort @archonet
That would essentially be a closed source fork of the kernel.
The GPL requires the end user be allowed and not prevented from making whatever change they wish to the kernel.
The people who want a closed source kernel can use the NT kernel.
How to disable Proton?
I don't want to (even accidentally) be counted as a Windows user, neither do I want to support "just build a Windows version, Linux users can run that too". That's how developers treated OS/2, and look where that got them.