It doesn't matter what happens (within reason) in the remainder of the season, the job should be and will be Milroe's to lose next year, even though Saban may say what he usually does regarding returning starters, but Jalen will be the clear incumbent. He was 2nd team All-SEC QB behind only the Heisman trophy winner and finished 6th in the Heisman race himself.
Btw, although Jalen threw the 2 bad ints, costing 10 points, that game was not all on him. Although the D played reasonably well through 3 qtrs, as soon as Jalen brought Alabama from behind to give them a lead late in the 3rd qtr, the D immediately gave up a TD (75 yds in 3 plays), then later when Jalen brought Ala to within 3 in the 4th qtr, the D immediately gave up another TD, then finally they allowed Texas to run out the clock for literally the last half of the 4th qtr. Although Jalen contributed to the OL problems, the OL did not play well at all and the running game, aside from Jalen's scrambles was almost non-existent; the RBs gained 63 yards. Jalen was the offense gaining 299 (255 & 44 really 75, the 44 included the sacks (5 for 31 yards)) of Alabama's 362 yards. It was a team loss, it's misleading, thus, unfair to put all of the blame on Jalen. It would be like blaming AJ for losing the 2012 A&M game because he also threw 2 ints but for 14 points in a game lost by 5, not 10 - one led to a TD by A&M, the other cost Alabama a TD. They were both team losses but no one said a word about AJ.
Your take is beyond puzzling, but certainly disrespectful and unappreciative of what Jalen has accomplished this year. It's because of his extraordinary skills that Alabama won the SEC and has a chance to win a NC. His passing stats were almost identical, including ints, to AJ's first year and that does not include Jalen's far greater rushing stats and running threat. Jalen plays in a more offense friendly era than AJ with worse WRs, but had a much weaker OL and RB room, and while this D is good and usually timely, it is not like the '11 D. This team is dependent on Jalen while AJ was able to be a game manager til the NC game.