Earlier quoted context omitted.
Recall implies something being returned. This should be called a mandatory software patch, or something like that. The problem is Tesla owners repeatedly see "recall" to mean "software update", so this might lead to a lot of confusion if a physical recall is actually required in the future.
It seems to me that calling it a "recall" emphasises the severity of the problem, which might make it easier to argue that a lot is being done for customer safety to the interested authorities. But I don't think Tesla wants this to be seen more than an OTA update from the perspective of their customers (at least those who ignore Tesla news). I had a VW car that was "recalled" shortly following the emissions scandal.…
Recalling the hardware is a drastically more difficult request to impose on customers and financially/logistically for the car maker.
That's a disporportate response just to highlight importance of an OTA update.