Have you ever considered these serious OS crashes may be related to sleep mode?
In my many decade long history with computers more or less all odd incidents have been more or less related to these sleep/hibernation modes and I have for long tend to turn them off immediately after use. I'm not saying they aren't meant to be used, sure they are, as that's why they are there, but there are just too many variables causing possible problems. Surely MacBooks and Mac's are different from Windows machines because this MacOS is pretty much tailor made for very limited number of different configurations where in Windows world there are like million different computer/configuration where it is supposed to work.
For example I have one older Windows machine that used to play dead when ever I put it in sleep mode and could not be revived until CMOS battery was removed/reinstalled on the mainboard each time. Sure that is pretty extreme case but I have found machine turning off and then turning on and waiting for extra seconds is usually worth the wait, plus especially with battery powered devices you lose less battery during that. I would not compare real computers with phones and tablets as those are so much different from real computers (those I of course keep always running).