This is GLideN64 all over again before it went open source and look how far it have come today.
GLideN64 also started with an GitHub page as empty as Exzap's Cemu but eventually Gonetz pulled through and released the source.
I don't think GLideN64 would have been what it is today if it still was closed source.
If Exzap and his team have no interest to release the source then there is no point making a GitHub page to tease people. If it really is legit then release the source so people can start contribute to the project.
GLideN64 also started with an GitHub page as empty as Exzap's Cemu but eventually Gonetz pulled through and released the source.
I don't think GLideN64 would have been what it is today if it still was closed source.
If Exzap and his team have no interest to release the source then there is no point making a GitHub page to tease people. If it really is legit then release the source so people can start contribute to the project.