See, the thing is, he's blaming GAF for decisions we didn't make. No one here told Denis to preview at E3 with his code in a disastrous state. No one here made him release early video or screenshots. We're not his publisher. We didn't force him, or any other dev, to release preview footage.
If Denis wants to wait until the game is finished to show it, and he can find a publisher who doesn't want a starting run at first day sales (which is why they release previews), who will publish things the way he wants to. He could become his own publisher, although he would almost certainly have to scale back his ambitions.
Denis strikes me as the same sort of actor who makes his living with Hollywood pop, while complaining about how horrible the Hollywood system is, always quietly ignoring the fact that there are plenty of independents in both mediums. The trade off, as in any commercial art, is that when you make a unique, challenging piece of art, it's simply going to have a smaller following, and you'll make less money.
Literary novels make terrible money, so bad, in fact, that very few literary writers can manage to make a living off their writing alone. The average advance for a novel is less than $10,000 and the average sales won't net the author royalties. On the other side of the spectrum, you have Stephen King, whose work is open, easy to read, and imminently accesible. He gets more than $10 million a book.
All artists get to pick. Are you doing it for the living, or are you doing it for the art. If you need the money, then you have to bend your knee to the desires and whims of the publishers and the customer.
No one's stopping Denis from doing things his way, except Denis, who thinks the answer is to attempt to silence critics.