Yes right now, what about 5 to 10 years from now ?

Or maybe for that option in the future, the device will cost thousands of USD more.

Or you need a special professional license to get a non-locked down device, and the license will cost more than a house in a rich suburb.

People have been asking "what about five years from now" for twenty years, so extrapolating from the current rate of change, I'd say things will be fine.

You can disable Secure Boot on x86 PCs, but nowhere else.

So how do people install openbsd on the thinkpad x13s?

Here's an article about the rule being made in the first place (IIRC, the rule got made at the same time Windows on ARM was itself first given to manufacturers): https://softwarefreedom.org/blog/2012/jan/12/microsoft-confi...

I'm not sure how it's working on those laptops, but I'd imagine the choices are either that Lenovo got given an exception, the rule as a whole got changed, or that Microsoft just hasn't noticed or is intentionally looking the other way.