This has been a problem as long as laptops have existed. I had a Dell in like 2006 that I would close and throw in my backpack at the end of the day. When I got home there was a 50:50 chance it would be about 5000 degrees with the fans blasting because it never actually went to sleep.

The fact that this still routinely happens 15 years later despite the insane progress of technology is kind of hilarious.