Unsurprising. [1] comes to mind.
Unfortunately, Nouveau has always been unstable for me, on every combination of hardware and software I tried it on. I'm glad it exists, and it seems to work for some people, but it always seemed infeasible that a single person could realistically maintain a project that reverse engineers one of the most complex drivers in existence from one of the most OSS-hostile companies in the world, and makes it work reliably for dozens of graphics cards, supporting hundreds of features.
Kudos to the maintainer for their tireless dedication over the years. Hopefully a larger team can pick up the maintenance effort.