When will DISA_STIG tools & Livepatch work with the latest Ubuntu release/kerne

[mahesh]

Specifically, 22.04.2 and kernel 5.19.0-43-generic
Seems, I'm going to have to downgrade to 20.04, I just want a hardened system backed by government (military) standards for security research. Am I wrong for doing so? Additionally, how would I prevent a full system upgrade when going about the update center to prevent my system from upgrading out of Livepatch support (ergo going from 20.04 to 22.4.2 accidentally in an automatic update)? What security flaws may I embark on by downgrading?
There's not a whole lot of documentation on this.