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.
More than it being half baked, it’s that is not a drop in replacement. It works differently, on purpose. So DEs, apps and even drivers (looking at you Nvidia) need to make changes to adapt to it.
For example apps that user screen sharing had to be reworked, because X11 allowed any app to just see the screen without any user action (I think Windows also does this, Android and iOS require at least a one time permission), but Wayland doesn’t allow that as it’s a security/privacy risk.