This is "unstable" as in "recent versions", not as in "broken". Anecdotally, "unstable" is a complete misnomer. Arch Linux (rolling distro, upgraded on my machi

This is "unstable" as in "recent versions", not as in "broken". Anecdotally, "unstable" is a complete misnomer. Arch Linux (rolling distro, upgraded on my machines almost every day for ~6 years) was far more stable than Ubuntu (8.04 through 14.10 or so, 18.04 and 20.04) ever managed. My pet hypothesis is that the core developers of any system are spending 95%+ of their time working on the latest release, and that (understandably, since that earns all the credit) hardly anybody wants to spend any more time than necessary to support older versions of anything. This goes doubly for combinations of two or more old systems which maybe ten people world wide might be using.