It's actually not a big deal but with the issues Microsoft has had with Windows 10 over the past year, it makes for good media fodder to stir up the masses. When this first hit the tech news sites earlier this year, my answer to anyone shouting "OMG I can't have my Win7 on my Skylake, die Micro$oft!" was to politely ask them to attempt to install Windows 98 on a Core i-series machine. You could see the gears turning in their skulls and revelation would dawn upon them that yes, this has happened before, many times, and is a perfectly normal progression.
It's not even limited to Microsoft; you can't install Mac OS X 10.7+ on anything older than a 2nd generation Core2 Duo, and with good reason. OS X 10.6 ran like crap on the first gen Core Duo and Core2 Duo machines, despite being fully supported by Apple.
There comes a time when the software exceeds the capabilities of the hardware, and this is no exception.