I decided to fact-check this and skim through the 60+ responses in the thread for that article last year...
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forums.tomshardware.com
Out of all those posts, only two of them were from people mentioning having problems with an aftermarket Windows key, and neither actually had their key deactivated after some time. One had bought a key on eBay, and found it to be a volume license, but got refunded when they contacted the seller about it. The other bought a key from a reseller site, and found it to be a used key from the start, but apparently didn't want to bother going through the refund process.
Then there were at least several people mentioning keys from resellers working perfectly fine, in some cases for years. And others mentioning getting Windows through the Insider program or an Education Edition, or simply never activating Windows, and putting up with the limitations.
The only ones mentioning their key becoming deactivated were those with keys from apparently authorized sources, where motherboard changes caused the deactivation.
And around half of the thread was just posts from those who hadn't actually used a key-reseller talking about how bad they were without actually providing any data to back them up. : P