i'd say getting COVID midseason, missing time, recovering, all sorts of lost practice time all were contributing factors
so was not enough time with his receivers, not being on the same page with reads/etc - that all feeds back into the issues with the late sign, no camp, little practice time
this is an offense predicated on everyone making the right reads and being on the same page.....that takes time and repetition, two things everyone lacked last season......if you watch Cam last year, you can see times where it def looks like the wheels are turning and smoke is coming out he's working so hard to see it and think - and his footwork tends to go out the window (he had similar issues at times with pressure)......then there were other times where everything clicked, he got over the top of the ball, his footwork was excellent, and he drilled some perfect throws (yes, this happened)
i think many here hope that with more time and a proper off season/pre season, the good reads footwork lead to good progressions and good throws......and that isn't unreasonable based on all the issues coming into play last year and their hopeful resolve this year......