That's not the fault of the OS. I've lost a considerable amount of work before because of application or OS crashes but I don't blame the software, system, or hardware. I blame myself for not saving my work frequently enough (or turning on auto-save to a short interval). Crashes will probably happen. The fault lies with the person not having a backup or a more frequently saved file. Having "faith in the awesome power of the Mac" is not an Apple or Mac problem, it's a person problem.
Ahhhh but Apple products are built upon an age of solid, reliable stability. No virus attacks, no malware, no crashes.
In other words, I'm a Mac not a PC..
That used to be the case and more and more people have complete faith in their Mac and the cloud and the average user isn't tech savvy enough to know how they all work.
Stuff like this really damages the brand. Nobody wants to buy a new machine and have it lock up every time they try and open Safari.