I asked a tech about this, they said once you start messing with stuff, future rattles are not covered under warranty.2022 RWD here with 10k miles. I've had a rattle in my driver seatbelt adjuster for a bit now, and one in the rear passenger door. SC sorted out the belt adjuster rattle, but I'm sad to report that the rear door is actually much worse than before after they spend 2-3 hours.
I'm well glad that the bit by my head is no longer a rattle, but annoyed as can be that the other rattle is worse.
Question now is- I'm handy enough, have gaff and felt tape as well as the silicone spray one poster had recommended; any good reason not to pop off that panel and go to town myself?