Linux on Thinkpad with Lenovo dock working just fine for my colleagues. Not that I'm a fan of Lenovo's but I coincidentally happen to know multiple people with that setup and no dock/linux/thinkpad-related issues. Since you say they were since "forced" onto a nonfree platform, perhaps this was years ago?
3 years ago. Apparently I struck a nerve here? My daily driver is Linux and Iām by no means a Mac fanboy, but I do think consistency is good when the alternative is a distraction from real work.