The future Google and others have in mind will require remote attestation for access to media/banking/social media etc. This is part of the groundwork. See also TPM 2.0 requirements for Windows 11 and rapid deprecation of Windows 10.
However, I can only comment on what Google is actually proposing. In the future, Google could do anything, regardless of whether or not this Android API exists.
"rapid"? It's in line with their lifecycle policy when windows 10 came out.