Freedom vs safety should be contextual. I’m not free if I don’t have choices and secure boot is a choice. Having it improves both my freedom and security somewhat. I want both unlocked and locked hardware, for different purposes.
Now do that on your smartphone. And then on your smart watch. And then on your gaming console.
Secure Boot being "a choice" on PC is an exception, not the norm. On just about every other device, the vendor is going to take a boot, shove it up your ass, and say "it's there to make your ass more secure" if you complain.