Sounds like something to take with a pinch of salt.
I find it hard to believe that Inmarsat, Iridium etc. are no longer functional in Ukraine.
Edit to add:
(a) Given all the Western journos broadcasting out of Ukraine, I think it is almost certainly a fact that Inmarsat, Iridium etc. are still functional because its kind of standard kit for warzone correspondents. All the "senior correspondents" the major news orgs are sending out to Ukraine will have cut their teeth on Inmarsat, Iridium etc., and will be comfortable with its use and operation.
(b) Twitter post from Iridium boss saying they've stopped shipments to Russia but have no intention of stopping shipments to Ukraine and/or stopping service over Ukraine. "Shutting down service over Ukraine would stop Ukrainian use and aid orgs as well."[1]
[1] https://twitter.com/IridiumBoss/status/1498847589520846854?s...