As someone who manages about 1500+ Mac's with JAMF Casper (and another 6000+ windows machines with System Center) - you are talking out of your arse.
In my experience - MS actually issues more patches and actually has a better track record than Apple - for example I've seen them issue firmware patches that have bricked machines (to the point where they had to be repaired) - its enough of a problem I actually now wait a month before releasing firmware patches Apple delivers to see if any issues arise. I've also seen them release patches that break core OS functionality like SMB, and printing - or release patches that seemingly munged Wifi prefs.
Last year I recall one patch MS released that could cause some machines to stop booting. So far this year is the only warning I've seen from any patch they've released.
Considering the kinds of hardware MS has to support - I think thats a pretty darn good track record.