No idea what is causing this, but it would be "funny" if they were all
little time bombs.
SpaceX says it lost contact with a Starlink satellite after suffering an “anomaly.” SpaceX isn’t saying exactly what happened, but space-tracking company Leo Labs says it “immediately detected tens of objects in the vicinity” of Starlink 34343 after the event.
...
SpaceX suffered a similar episode in December when it suddenly lost communications with a satellite that also seemingly exploded. That incident occurred just a week after a near miss with a Chinese satellite.