1. Disconnect that computer from the internet.
2. Are happy to have your computer infected and join a botnet.
Also, Wannacry is a good example of a LAN attack reaching further than you might expect. Or there are various conditional ways to breach the NAT, one of them simply being NATless ipv6 with a misconfigured firewall.
Microsoft might bluff a bit and actually backport fixes for very serious issues, like how Wannacry was patched all the way back to XP. Maybe Win10 is fine for several years, but the real problem is that you don't know how vulnerable you are with each passing year.
One random thing that ticks me off, Google Meet insists on using VP8/VP9 because they invented it, which has way less overall support for hardware transcoding. That's why it uses so much more CPU on many devices than Zoom etc which use the more common H.264.
Microsoft at some point had a bug where a single packet could take over the entire kernel. I think it was a bug somewhere in the IP stack (something related to fragmentation in IPv6 I think?). Linux had similar issues.
If the built-in JPEG viewer or h.264 decoder or whatever component you use contains a bug, your computer can get infected. That also goes for things like preview generators and file indexers that run even if you don't open the file.
As much as the web seems to have consumed everything, there are still plenty of files people open.
In practice, you'll probably be fine as long as you keep your browser up to date and use up-to-date third-party software to open most files. At some point Chrome and Firefox stop supporting your system, though, and that's when infection suddenly becomes real easy.
Like come on. Let’s not pretend this is a M$ problem. Apple is just as greedy in terms of what is effectively planned obsolescence.
Apple does have better speakers, though. So that's a nice plus.