I suggest that you watch Robinson run his routes. He doesn't snap off his routes, which a receiver is supposed to do.
There's a sluggishness and a non-aggressiveness to his play and it results in him being consistently too near to his defender.
In addition, he has made little effort to fight for balls thrown his way.
None of which inspires any confidence in a quarterback to throw him the ball.
I'm not buying the narrative about timing and familiarity with Stafford being the reason why he's not getting the ball.
Robinson's just not getting open, even on scramble plays.
Football's about desire and winning and if you're not showing the hunger, why are you on the field?
The same applies to Akers.
What people often don't understand is that sometimes when players come from an environment (the Bears) where the competitive performance expectations are low, their value becomes inflated (big fish, small pond) compared to the lack of quality around them.
It appears that we've made a mistake in acquiring Robinson, a costly one unfortunately.