Am suspecting Microsoft will pull another one of their tricks where new DirectX doesn't support Win10 and you'll simply have to upgrade to be able to play new games. They pulled the same stunt with Win7, since people didn't want to move away from older versions. They are no strangers to such methods.
To be honest, I am no longer following what MS is doing. I do remember DX10 and Win7. And that supposed thing is just BS. If Linux can have compatibility layer for entire DX lineup, they can add few calls for older versions of OS. They just don't want to since that pushes people to new purchases.
Yea, I agree they don't need the limitations. Kinda' like how it's totally possible to install 11 on a system without a TPM 2.0 chip. They just want to pretend Windows is more secure than it is.
Am not even sure they are using TPM the way it's meant to be used. I have TPM on my laptop and to be honest I was too lazy to feed its random number generator to my system to increase entropy. Average Joe uses machine to browse Facebook and watch porn, not generate keys for keeping state secrets.
Well, it can also do cryptographic operations on its own of a few sorts for 2.0, so it can in theory speed some things up via offloading some cryptography... but yea, not strictly necessary for a normal end user. They mostly just want a device fingerprint to track more easily.