I went to restart my machine (was plugged into a lightning hub with 3 monitors, I don't ever recall messing with refresh rates) and it went to update. At some point in the loading bar, the screen went black and then flashed an apple logo. When I pressed power, I could sometimes get the apple logo to display on boot, then it went dark. To me it looked like it wasn't booting at all but the machine is pretty quiet even when it's on so it was hard to tell what was happening.
We went to do the firmware revival process using another mac and it would barely recognize the device depending on what we tried. Eventually we were offered the option to do a full system restore, and after many hours battling this, we decided to just lose the data on the machine.
Luckily I keep most major stuff in cloud or in github, but I lost a significant amount of work from the previous 24 hours that ended up delaying a release and causing significant pain. For how much these machines cost, this is completely unacceptable. I know windows machines have their fair share of issues, but in 15 years of working on various windows and mac workstations this is the only time I've lost an entire drive.