No surprises here. Just like the lockdown on iPhone screen and part replacements, Macbooks suffer from the same Apple’s anti-repair and anti-consumer bullshit. Battery glued, ssd soldered in and can’t even swap parts with other official parts. 6000$ laptop and you don’t even own it.
IDK, I’ve had exactly the same problem with my work MBP. I was late to something and the computer locked up, so as soon as I got some level of control I put it to sleep and it seemed to sleep. An hour later and the fan was going crazy and it was super hot.
It doesn’t happen a lot, but macOS isn’t immune to stupid issues like that. I’ve had far more hard crashes with macOS than I have with Linux.