> avoid transmitting while they're in the boresight and in general don't transmit toward the antenna

Not sure this will help against the mentioned unintentional electromagnetic radiation (UEMR) likely caused by the electronics of the satellites themselves.

"This radio emission at lower frequencies from Starlink isn’t their downlink frequency, but instead unintentional electromagnetic radiation (UEMR), thought to be caused by the onboard electronics of the satellite."