I am sure somebody thinks that about every exotic though.
but yeah, I am not not too sure why all exotics didn't carry over.
regardless of what people think, the Vex can only be earned one way. It is a trophy weapon that people got doing VoG when it was still an actual challenge. Its insulting that they have decided to take it way from you after the hours spent putting into to beating VoG on hard. And lets face, that is what they are doing by not advancing it. They are taking it from you because it will be next to useless. This move with the exotics has really annoyed me. If they do this for Year 2, they will do it again for year 3.