I had these problems with the factory installed build of macOS. While I was doing my initial setup the machine crashed and had to be restarted
I should have returned it then, but I foolishly wanted to believe it was a software issue that would be resolved and I didn’t want to be stuck with my old MacBook Pro
Software can do things to avoid or trigger hardware issues by not exercising something faulty, so changes in relative frequency of crashes from build to build don’t imply that it’s software.
There very well may be several issues here including both software and hardware, but I am convinced that my hardware is faulty - especially given that it so often overheats with little load and someone else here described having that issue and having it go away when they got a new MacBook Pro (after several failed logic board replacements)
IDK if the thermal issue is the same or a different one from what’s causing my crashes, but I generally have the impression that there are multiple issues and/or they could be something stochastic like BGA soldering issues making faulty connections, intermittent shorts, or similar
Independent (I think) of this issue, both my previous 2018 MacBook Pro and this one seem susceptible to even gentile torsion of the enclosure. If I put them on my lap, a little bit of twisting causes display and other glitches. That could point to any number of things including dense BGA soldering issues or insufficient mechanical isolation of the logic boards from the enclosure, or insufficient rigidity of the enclosure.
This for me is not just disappointing, it’s infuriating and it’s making me feel greatly ashamed for having been such a long term loyal Apple user and advocate.