That fellow takes a long time to say very little, but of course he’s basically right — you can run Win7, or Vista, or XP, or 2K, or 98, or 95 forever, but what you can do with them decreases as time goes on, and their security suffers more and more.
Win7’s desktop interface (GUI) is still my favorite. But I no longer allow my Win7 hosts to connect the Internet. Why should they? There are no security or application updates out there for Win7. But I have a few old Windows-only programs that I still need to run, and either I prefer to run them on Win7, or in a couple cases they won’t run on Win10.
My Win7 systems are “air-gapped”, meaning they have no connection to any of my other computers. When necessary I exchange files using a USB Flash drive which gets malware-scanned daily. So it’s possible to keep using Win7 with some degree of safety, with strict limits on what it does.
But after Jan 2020 I will never again use Win7 as my platform for websurfing or any other internet-connected application.