Nope it only shows lack of knowledge of the people attacking him.
He wouldn't have any need to use backup of his data if windows update haven't messed up his existing copy in the first place.
If he had backup he would still have lost all data created since last backup plus he would lose time to restore it.
In both case fault lies with Microsoft software and policies only difference would be scale of damage.
Clearly MS update program is shit. Hell, their handling of Pro version is kind of shit too (can't turn off Win Store except if you have Enterprise, for one example). The madness that MS Win10 patching situation is shit too. Let's say I had many a discussion with MS SMEs concerning that. Rolling out Win 10 at scale is a pain in the rear.
All that said, not having backups is dumb and akin to playing Russian roulette. There are too many ways to lose your main drives and OS partitions.
Local backup plus cloud backup is ideal and very easy to do now days. I use CrashPlan for example and it handles both and it's not that expensive. Hell, for some important docs I have them in 3-4 places (use encryption as needed, CrashPlan has strong by default with your own keys).
To summarize: MS general handling of Win10 from consumer to enterprise including upgrades and patching is crap. Backups still got to be done.