It seems like TPM will stick around, as Windows 11 basically requires it. Whenever or not this is a good thing, having it available, means that it can be used for something good, like:
- Provide a source of randomness for cryptographic functions
- Sign states of configuration, make it validate that the hash of a configuration was not updated without it having been signed (MP does not need to fail, it can inform the user.)
- Protect the keys that MP uses