Just to provide you some advice in case you want to try again or 'fix' the majority of concerns that people have...
The reason so many people are skeptical of what you're doing is because many of us could have done the same thing. I could go out to vgmusic.com and download some Shenmue MIDI's, use GarageBand to make them into piano music, and then post a video of it just like you did. If you had previously worked on Piano albums before and referenced that work, people would know you could actually do what you want to do and not have reason to be skeptical.
Without that, you might actually have to do more to earn people's trust. For example, plan out what you want to include in your album, create a "sample" video of someone practicing playing one of those songs (since it would be a video it wouldn't be the quality you want for the actual album, but then you'd see someone is capable of performing the work and the funding is just to pay for professional quality) and then maybe it would seem easier to trust you. I hope this helps.
Check out this video I just made in 15 minutes. It is not affiliated with this project: