Thanks for the insight. I had never considered this even though i researched quite some oddities in UTF-8 parsing myself over the years. It's the gift that keeps on giving when it comes to ways to breaking things in software, i find. Time to go over my code again.
OpenBSD only implemented loading AMD firmware two days after AMD published updated microcode to fix Zenbleed. Which makes me believe they were not among the "major kernels", vendors or other entities that got a heads up of this vulnerability which happened over two month prior.
Whether they were last to be in the know or not, i applaud them for being one of the first to have patches out for their latest two stable releases (7.2 and 7.3).
This allows Mozilla to trim away some of the cruft and have more time available to focus on actually improving Firefox for people living in this day and age. There will always be someone who feels left behind but to me this decision is a no-brainer.
You can run debian without systemd [1]. I've been running debian sid - the "unstable"/rolling development version - with sysvinit for over 3 years now and it has been a good experience.
You mention nvidia support, others are hopeful for a better filesystem and wifi as well.