Sounds like there’s some additional EMI shielding that is needed for future iterations of megaconstellations. On the plus side since they have relatively (compared to geosync satellites) short lifespans of only a few years they can probably sort this out by passively fixing the next generation of satellites. Additionally, from what I have seen of the way they pack the Starlink satellites into the fairing, they seem to be volume constrained in the fairing rather than mass constrained, so there may be additional mass budget available for little overhead.