I thought the allowable upgrade period had expired?
It’s a complicated answer but the short version is “yes”. As z1ppy suggests, MS seemingly don’t care. I can only assume that either getting rid of all the legacy shite and moving everyone onto one supported platform is more important to them than a few pennies here and there for a desktop licence, or they’ve lost interest in the consumer market when they can charge tens of thousands for a SQL licence.
More cynically, I rather suspect that few people see sufficient value in an OS to want to spend much money on it anyway, it’s something that ‘should come with the computer’. It’s probably why they’ve moved to a subs model for Office, they’ve realised that your average joe isn’t going to drop £400 to write a couple of letters and… I don’t even know what else, what do ‘normal’ people use Excel for?
But, yes, it still works and is unlikely to be going away any time soon.