Linux is still a viable alternative. But I have been saying for years to enjoy unrestricted access to your PC because it will go away at some point. Fortunately there are techniques to recover the TPM keys but they are laboratory equipment level and require advanced tools.
This is just the first step. Wait until the hardware refuses to boot a non-approved signed OS. Even Linux will fall in line at some point or only run on inferior hardware.
The Wild West of PC and internet freedom are coming to a fast end. And year by year we literally witness this demise.
On the bright side, reversing skills will be in higher demand and perhaps unlocking techniques will become quite profitable. Lab equipment is expensive, it would be nice if labs would rent equipment or the whole laboratory space for periods of time. Otherwise, it would certainly be nice to be good friends with such a technician