Different time, different era, different players - but this thread has me remembering some things I heard about the QB room when Franchione was hired. The Zow/Watts thing had been going on for two seasons at that point; Watts had been the starter in 2000 until a season-ending injury sidelined him and Zow played the rest of the way. Zow had been the starter for the back half of the 1998 season and most of the 1999 season. Reportedly, Franchione told Zow "you throw too many interceptions and you won't play in my offense" or something to that effect. Fran liked to sprinkle in option plays and obviously Watts was better-suited for that. Ironically, Watts got hurt if I remember correctly and Zow had to finish out the last few games of 2001 (and played quite well from what I recall).
Not unprecedented for a new coach with a new offense to bench an established starter at QB. That said, I don't think we have a Tyler Watts or a Tua (in the case of Jalen Hurts) sitting in the wings. And Zow had been a good player but never as consistently productive as Milroe was last season (and at no point that I recall had Zow ever been in the Heisman discussion).
So for everyone asserting that a new coach with a new system will be inclined to play guys who are better suited for their offense - you're absolutely right. The difference IMO is that we've got nobody else on the roster with anything even approaching significant playing time and the established starter was very productive last season. These two factors to me constitute the part that would be unprecedented.
I'm not saying he keeps it, but Milroe begins the spring as QB1 and will have to actively demonstrate that he can't get it done in order for someone else to step in. We know what we have in Milroe - IMO we really don't know what we have with the other guys which (to me anyway) gives no room for one of them to suddenly leapfrog an established starter without him actively losing the job. I also suspect this will lead to Milroe, at a minimum, getting the nod for the opener in the fall. I could be wrong, but when it's not truly "live fire" I have a hard time seeing him play so poorly in practice that he never even gets a shot in the fall.
IMO this would be a completely different proposition if we had someone on the roster that had started a few games, or a transfer portal guy who had started elsewhere. The guys behind Milroe are still quite green. Experience has to count for something, especially in the SEC. I don't know if he ends the 2024 season as the starter, but I'll reiterate that I will be completely shocked if he doesn't begin the season that way.