I've noticed in the Linux community whenever someone asks for a recommendation on a laptop that runs Linux the answer is always "Get a Thinkpad" yet Lenovo doesn't seem to be a big Linux contributor or ally. There's also at least six Linux/FOSS-oriented computer manufacturers now:
So what gives? Why the love for a primarily Windows-oriented laptop when there are better alternatives?
Cost.
Older Thinkpads remain extremely capable and (crucially) highly repairable. The T series in particular is also better built (read: more solid chassis) than many others, including some on this list.
It doesn't make a lot of sense to support these alternatives given the absolute shock difference in cost. $300 bucks for a used T series gets you a lot from a customizability, repairability, and reliability standpoint.
I've had 4-5 such systems running Linux and never experienced any issues with BIOS.
Obviously you shouldn't get a model using nvidia if you want to run Linux on it (unless you are aware of the extra time it takes to set up and the other pitfalls). I do actually have a T440p with a 730m in it -- and it's fine, I just run the open-source driver.
If you're a FOSS enthusiast, might as well buy one of the models that are supported by Libreboot