ESU program - what if I don't WANT to login with my MS account?

I've used Windows since - well, what was the first Windows version? And I still don't understand why MS does with it what they do.

I have a Microsoft account, but I don't use it to log into my Win 10 laptop and I don't want to.

Is there no way, then, to get the extended support being offered?

And - what happens to my Win 10 PC if I don't get that extended support?