Hard truth - that logic applies equally to both interpretations about the meaning of the gesture.
The only person who knows the truth with certainty is Keon - the guy who has admitted to sharing his advice verbally in the huddle AFTER gesturing.
If Keon wasn't trying to show Josh up, why the need to repeat the messaging?
Can anyone answer my question posed earlier - why haven't we seen other receivers who have more time on task with Allen (e.g. Shakir, Knox, Kincaid, Gabe Davis, Cook, Johnson) do that same gesturing after an incompletion?
The only comp of Coleman's behavior I can think of for this behavior is Diggs, who's a known me-first guy.