I was never employed by Purism, I work as an independent contractor. I haven’t done any paid work for Purism for some time now, but neither I cut my ties with Purism nor Purism did with me, so I’m looking forward to continue my work on the Librem 5.
Also, although mobile GNU/Linux is kind of my hobby too, I have (intentionally) directed my spare-time attention towards other things in the last months, to refresh my mind a bit and combat potential burnout. Those things combined result in the activity graphs you see 
FWIW, right now I’m preparing myself for my talk on FOSDEM this weekend, describing in detail some of the work I did for Purism last year as a kind of a “debugging case study”: FOSDEM 2024 - Universal Serial Bug - a tale of spontaneous modem resets