This statement is not strong enough. When writing a policy like this, the phrase “should not” carries no weight. This statement ought to be “Particularly, AI must not make the final determination on whether a contribution is accepted or not.”
A “should not” here would be advisory rather than proscriptive and therefore would be ignored.
This language is even less committal. I question why it’s in here at all, except to say “We considered this, so don’t ask us about it, but we couldn’t decide what to do about it”. Either own it and say “The Fedora Project does not require that AI tool usage be identified in git commits and/or merge requests” (which is what this phrasing is trying desperately not to admit to meaning) or else take a stand and mandate the annotation and note that intentional violation will be met with penalties up to and including loss of packaging rights. Just don’t try to imply something other than what is intended in this policy.