Allen's accuracy can improve marginally if he learns how to put more touch on the ball period. There were multiple examples yesterday and there have been frequent examples since I first saw him a few years ago. He relaxed at the combine and displayed wonderful touch but per norm it doesn't play out that way in actual games.
Dolphin fans have been conveniently ignoring the play with Xavien Howard beaten by 4 or 5 steps on a deep ball. That was a rightful touchdown if Allen simply put more air under the ball.
Bottom line, Allen needs to maximize his "good" possessions, like Tannehill did yesterday. Touchdowns, not field goals or frustrating stops in positive territory. Given the accuracy issues there simply will be fewer opportunities for Allen, similar to the NFL game with less possessions than in college. Allen is not going to convert those 3rd and 5 plays to begin a drive as dependably as other NFL quarterbacks.
In college football the lack of accuracy is not as critical because you have more possessions and the talent gap from program to program is wider. That's why many analysts try to kid themselves into believing completion percentage in college doesn't matter. They fail to fully recognize the situational variance, that once the quarterback is in the NFL he's dealing with several fewer possessions, and into tighter windows, and so forth.
Also, Josh Allen desperately needs better helpers. Notice the complete lack of that theme in this thread. It is not surprising at all. This forum is loaded with posters who want perfect receivers and perfect line play and perfect coaching for Ryan Tannehill, but like to pretend every other quarterback already owns that trifecta. From what I saw yesterday, Kelvin Benjamin doesn't belong in the league right now. He looked worse than Devonte Parker has ever looked. None of the Bills receivers were exactly scary, although Zay Jones has rebounded nicely from a shockingly poor rookie season.
McCoy is over the hill, although still dangerous in spots. Charles Clay has regressed. He never was the prototype tight end anyway. Dolphins don't draft prototype tight ends. But Clay has lost the nifty H-back type burst and agility he once owned.
I guarantee the Bills offensive line is ridiculed on Buffalo forums. That is a given around the league, even if Dolphin fans don't want to acknowledge that.
Your coach and whoever is guiding him from the booth make some bizarre choices with the red flag. It isn't fatal in the first half but that attempt yesterday on the Tannehill sack may have been the worst I have ever seen. I was surprised there was any delay at all from the official, that Hoculi son. In a proper world there would have been no hesitation at all, as in, "Buffalo is challenging the ruling that the ball was outside the goal line. The call is confirmed. Buffalo is charged with its first time out."