As I understand it, the 5 conference champs are still guaranteed a spot but the favorable seeding and bye for the 4 highest ranked champs goes away.
So basically if you apply the current rules to last year's CFP, the matchups would have been different, but the teams would have been the same (see
https://www.espn.com/college-footba...-football-playoff-seeding-change-2024-bracket). So the ACC theoretically would have still had 2 teams in if the new rules were in place last year. That remains possible.
If UM plays Clemson in the ACCCG, both teams come in top 10ish with 1 loss or fewer, and the game is competitive, I would guess there is a good shot at both getting in.
But I definitely agree with your sentiment - the only guarantee of getting in is to win the ACCCG. You cannot leave it in the hands of the CFP committee, especially with the perception among some that it "screwed" an SEC team last year.