I think I may have found a clue, but need to test my theory. I parked in my driveway 3 times today and the steering column was telescoped one of those times. It happened when I was parked on a slope, not on the flat part of my driveway.
I have been seeing this on my R1T for at least half a year now. This makes no sense at all, but it seems to happen only if the truck has been parked outside in the sun, it never has happened with my truck parked in the garage. I would say it happens about 10% of the time I get in my truck...
I have seen the charge rate drop after 1-2 minutes using the adapters. They send the pin temps to the Tesla chargers and the charger throttles the rates. Yes, starts at 210kw then right way drops to 120kw. Happens with my Hummer also, and both trucks show limited by charger.
FYI, GM...
Older V1 or V2 Tesla chargers do not support CCS protocol. Tesla has also elected to not open up all V3, there are a few of those still not open, even though they support CCS protocol.
The charging speed issue is related to the Superchargers not supporting 800V, that cuts the charging speed in half for the GM trucks. My Hummer battery, same size as Silverado has done 30-80% on an GM Energy charger in 26 minutes. It peaks at 350kw and is still charging at 180kw at 80%.
I have a Hummer, in addition to my R1T, and agree with your points about towing and service. The thing you did not mention is the charging curves. The GM trucks have a far better charging curve than the Rivians, and I do not see that improving.