If you don't know that one of Bushman's few weaknesses was man pressure and the simple football fact that it increases in the redzone when things are crunched down, I don't know what to do for you.
Instead of acting so hurt every day that people pointed this out to you, and noted that trick plays from the 40 do not show that he's beating redzone coverage, you could acknowledge that maybe it's not his strongest point as a player and move on.

Do they need to use him a lot more? Yes. Does he need to work on that in order to get a few more RZ targets? Yes. It's clear to literally everyone including people off this board very good at analyzing football. Do QBs need to see him? Yes. There are a number of things that need to happen.