Yes, you'll see a few people arguing for MS doing this by saying "Windows 7 is out of *ahem* mainstream support! You shouldn't expect it to work with new processors!" Even if leave aside that extended support certainly has never behaved that way in the past (XP will happily download and install updates on my FM2 machine) they remain silent about Windows 8.1 also disabling the updates that is STILL IN mainstream support.
Microsoft support guidelines simply do not mean anything. They can change at any time in any way you can imagine.