I agree with you regarding the players around him being PS players. In fact I doubt there are 10 players on this roster who would even make the roster of most of the NFL teams.
I may be higher on Rosen than many others on this forum but I don’t care who the QB was today. With the dropped TD catches, the fumble near the goal line, the calls for three running plays inside the 5 yard line and the putrid OL, the best QB in history would have had trouble putting more than 6 points on the scoreboard today.
Unless they severely upgrade the talent on this roster, it won’t matter who the QB is going forward. Because whether it is Rosen , Tua, or someone else, this team will continue to struggle as long as they continue to have a terrible OL, a bottom of the barrel defense and WR’s and running backs which just aren’t good enough.