RemRex...
I will interpret the question using my limited understanding of the English language and offer the opinion that coyote calling "really takes off" in late September and October.
I feel that vz63 offered you a decent answer, and meant no harm or insult, and you were not justified in your reply to him, which could easily be considered "impolite" even though you suggested that it was not. In other words, I believe you were a little too defensive. Your question as written, could be interpreted as coming from a novice, which you hasten to correct the impression.
We can forget about it as misunderstanding, but if it were me, I'd be a little hurt. 
Good hunting. LB
