Microsoft has stated that it will not support any computer that fails to meet requirements; yes, also TPM2.0. It means you still put yourself, and me, at the risk of your computer being an email spam bot or other nefarious bot setup. Here it is right from the mouthpiece:
https://support.microsoft.com/en-us...irements-0b2dc4a2-5933-4ad4-9c09-ef0a331518f1
Now all of us suspect Microsoft will quietly change its tune and also suspect this doesn't include security-type updates, but keep in mind Microsoft did just this last week take the very aggressive stance of removing all drivers from older hardware. It is plausible that Microsoft is playing for keeps here and they will let you go down with the ship.
At the end of the day the official word is the official word. No support means no support. Proceed with caution. Many people may feel happy risking mine and others well being, well, that's really classy of you. Such wonderful Gentlemen and Ladies around here.
But do you put yourself at risk? Don't risk your own bank accounts and other information. That is, quite frankly, stupid.