It most certainly is.
At this moment of time I am replacing a motherboard. Will Windows 7 even boot off it? NO!
No efi support or I should say limited and no I do not even mean secure boot. I am talking usb 3 which Windows 7 doesn't support. USB 2 in efi? No support or very limited. Sata in uefi mode? Nope. Exotic. Need 3rd party driver.
Windows 7 will boot if you turn on csm aka compatibility support module which trashes your boot time.
This next statement is more controversial but important for non slashdotters ... not everyone uses or wants a desktop pc. No tablet support. MS surface is gaining popularity and so are Lenovo yogas, dell venues, etc. Consumers want portability, apps, programs, and super long battery life.
6 years is a long time in technology. Things change.
Like XP before it Windows 7 is great for the hardware designed for it. Old school bios, no uefi, usb2, no 4k scaling, etc. Meanwhile as quad core atoms and future intel SC move more components into hardware and rely on firmware ala Uefi Windows 10 and later will be better.
Right now Windows 8.1 is faster on a newer build because you don't need to disable intel smart connect and turn on CSM and use 3rd party drivers that auto launch just to get Windows 7 to work at all
I will say this. I HATE the look of flat, pastel, chromeless windows, and blinding white and nursery school colors. I miss aero and I am playing with glass8 :-(
That is my only complaint but this is the new thing designers do today and that is not ms specific. Many refuse to hire anyone with a portfolio with skuemorphic design. ugh.
But I broke myself in and it's fine. I realized I just hated change because 7 was so awesome for it's. But it is 2015. If your 2010 era machine still works keep using 7. XP users held onto their clunkers for years. Everyone else will move forward