I see no point in all these accusations. I wish dev would be more active too - But im sure everyone able to help dev with development work is very welcome to help. If you aren't doing shit yourselves, then you shouldn't blame dev.
This is the new world, you can't just buy some cryptocoins and expect everything to be fine and the prices to climb at your will. It doesn't work that way. Hmm.. Yea he used or moved them, there will probably be a good explanation, maybe the new partnership he is making. At these prices, he wouldn't even make 2 btc if he sold all the premined coins.