Yes this is indeed a very bold statement but I think the project has great prospects. That's why the guys make such statements.
Yes, but much depends on the amount of fees. The team they already have and quite professional.
If the budget allows - they can make a really super GitHub
If you read carefully, ELLCRYS won't competition with Github. it's alternative for developers who want to earn on open-source projects or make money by codying. Also nature of GitHub isn't suitable for smart-contracts, but ELL do!
I think this can be a great success, if everything will be fulfilled as promised. But we will wait for the launch of the platform or at least the alpha version.