Quite so, he's One Read Tua. It this offense he doesn't do NFL progressions nor read leverages for route trees. The play is designed to get the receiver to a spot at a certain time and the ball is expected to be there. Tua's job is to throw to that spot, his first read, no matter what the coverage dictates, or even if the receiver is there or not. I'm surprised he wasn't solved sooner, because he really looks like a raw rookie if he doesn't make that One Read throw in rhythm. Maybe they're just saving the Second Read for key games, like the Bills.
That said, the Dolphins adjustment in the 2nd half against the Chargers was, if they're going to play man, then if the first read isn't there pull it down and run, since most of the DB's will have their back to you. It was somewhat effective but not like Josh Allen with his "if they run it back with straight-up man cover again I'm running for a 40-yard touchdown" stuff vs Denver.