The AlmaLinux Infra team lead posted on Reddit that they are planning on supporting AlmaLinux for the full 10 year release cycle[1]. Seems like it could be a lot of work, but also maybe an opportunity for Red Hat collaborate and ensure the RHEL sources are continually pushed back upstream for the full maintenance period of a RHEL release (even if point releases are no longer maintained).
[1] https://www.reddit.com/r/redhat/comments/14yyf0k/the_future_...