Not surprising though since Azerbaijan always ends up with the Swedish song that's better then the majority of MF itself. 
), it just feels like the Azeri broadcaster is lacking confidence towards local composers to me. We've only had one "true" Azeri-made entry so far and, even though I wouldn't praise it (not my type), we don't know what would have followed the year after, hadn't they decided to buy their songs abroad. IMO they should give it another try at least. Azerbaijan most probably does not produce Western-sounding music, that's a fact and that ok! Not a long time ago, oriental-sounding songs were quite popular in Eurovision, there is an audience for that kind of music and please don't assume it would be bound for failure. As long as it's well crafted and genuine, I don't see what could go wrong tbh.
But putting the language aside, they can afford trying to send a "homemade" song imo. What about picking a song composed by Azeri composers and revamp it somewhere else if need be? It doesn't sound that infeasible. 
If you want my opinion (maybe you don't, but there you go
Azerbaijan has sent quality pop songs with a rather wide appeal so far, that's for sure, but there's nothing Azeri in them (minus the singers), even their language hasn't been showcased once. They aren't Sweden and should realize that they have something else to offer.
Of course, if I find "Miracle" good, it won't prevent me from liking it and praising it. But I think it's too bad to rely solely on a borrowed identity while there are singers and composers out there who would do just as fine. And there's no honor in buying a song meant to please the crowd, any country could do that (and some others actually do).
Well, 2009, 2012, 2014 all had ethnic elements in them, I think 3 ethnic-influenced entries in 6 years is well enough to say they show more traditional elements than 80% of the countries competing. I also agree with you that the songs could have at least sommme verses in Azerbaijani language, I criticize them for this.
