This reads to me as nearing end of life, and simultaneously most of what I’ve seen about crimson is to the effect of it is under rapid development and not stable as breaking changes may make their way in during this time.
Is there no option for up to date and reasonably stable?
On my PP have been running debian trixie without any problems, I was thinking about flashing crimson as it’s bookworm so should be quite stable even if purism considers it under testing, right?
They are different because one of them is on my Librem 5 USA (ARM64), as mentioned in that thread, while this one is on the Librem 14 (x64), as mentioned in this thread. In addition, the Librem 5 USA has a cellular modem while the Librem 14 does not have one.