Whatever price you find for a refurbished M2, take that money and go find a laptop known to be well supported on Linux, it'll just be a better experience and you'll probably get more for your money.
not an apple user, but apple is well known for their build quality. what other laptop manufacturer is on par with apple's build quality?
sadly, i think that's exactly the reason why so many gnu coreutils/libc/compiler competitors keep croping up: people want to get rid of the gpl as much as possible. if they could replace the linux kernel with a non gpl variant they would
not that the people creating the projects necessarily have this intention, but the projects are certainly being picked up and sponsored mainly for that reason