Or maybe they will launch Win 12 with optional TPM support.
Imho making the OS(es) TPM only cannot be good for their business, many people are still on Win 10 with no intention to switch, since their motheboard does not support TPM and do not want to upgrade PC / waste PCI-E slot on TPM extension.
Absolutely not. None of the arguments you said are even relevant for their business. If it was true they would do their best to reduce the requirements creep version to version.
Of course you can use Linux, but you made clear that you’re uninformed about that in another post.