> That said, Remarkable the company has been fairly shitty. They removed the links to the dev tools, and don't really respond to requests for source that they are obligated to release under the GPL in any reasonable time.

Which project did they not release GPL'd code for? They do have the kernel source available: https://github.com/reMarkable/linux/tree/zero-sugar

The top level github page also lists their trees for other projects.