This has nothing to do with readability of his posts. If anything, it would've been easier to just outright ignore him if his posts were completely unreadable.
I think it's natural that when you present your ideas to others, you may get criticism about it. So far we've been pretty constructive when we do give critical feedback on Giga's ideas. However, invariably he ignores all criticisms, and act like he doesn't even read it at all. And he seems to expect other people to only stick to his narrow, half-baked so-called "ideas" of things rather the let the thread evolved in additional directions from the feedback of other people.
And you'd think that if he's so excited by his own ideas, he would actually take the slightest bit of effort to try to develop them further, but so far we haven't even seen as much as a crude sketching of a level or other such things he calls his ideas. How are we expected to get excited by his ideas if he himself hardly acts like he's excited and motiviated by his own ideas?
If JRR Tolkien were to write Lord of the Rings the way Giga behaves, all we would ever get is the title "Lord of the Rings", with no indications whatsoever what it might be about--for all we know it might be about a wrestler, or maybe the rich founder of a telephone company or something. It wouldn't be that unreasonable to expect Tolkien to at least give us a brief description of Middle Earth would it?
We are not robots that respond to every single post with "omg that is the gr8test thing I've ever heard". If that's the only kind of response that works with Giga, I'm afraid he's going to need some counceling to get himself through to adulthood as life is only going to get more challenging.