Linux

Sure do, though not for all the claims I'll make here as that was from me obsessively watching the purism forumns and reddit over the 5 or so years this was going on. They promised a phone which most people didn't get for five years. When it shipped the specs were not great especially for the already pricy cost they had it at. This, after quite heavily suggesting they were nearly good to go. When it came close to the end of waiting, they added a second option (no phones were in hands yet) to upgrade their order, at a cost, to skip the line and get it quicker. Suggesting that if it didn't sell the company couldn't ship the original either after taking money both from a crowdfunding campaign and their site. Though a few were eventually able to refund, they sneakily changed their policy to include "no refunds" when at time of purchase they stated clearly refunds would be available at request. There's also been an issue with their laptops which were advertised as fully FOSS, etirely non-proprietary before eventually shipping with some proprietary software. All around, their customer service is terrible and their responces to allagations and critisism has been childish threats and legal attacks. All around bad group.

here's some blog posts and an article:

https://jaylittle.com/post/view/2019/10/the-sad-saga-of-purism-and-the-librem-5-part-1 (read all 3 parts)

https://anarc.at/blog/2020-07-13-not-recommending-purism/

https://www.pcworld.com/article/422917/why-linux-enthusiasts-are-arguing-over-purisms-sleek-idealistic-librem-laptops.html

Here's Luis Rossman (Not always correct on what he reports, but by my memory quite good here):
Youtube - https://www.youtube.com/watch?v=-IjUryQOlgk
Piped - https://piped.adminforge.de/watch?v=-IjUryQOlgk

Youtube - https://www.youtube.com/watch?v=wKegmu0V75s
Piped - https://piped.adminforge.de/watch?v=wKegmu0V75s