Same. What really gets me with this one is that the assets look ripped straight out of the original for the most part, not sure why they didn't go with the route of extracting them from supplied game files like most every other similar project I can think of. I can't imagine it'd be due to technical limitations.
I don't think it'll make it to the end of the day, but hey, at least they had the sense to keep it a secret until it was ready lol
Open/closed source has nothing to do with it. If this project is using Nintendo IP without permission (and I see no evidence this is a licensed product) Nintendo will definitely go after them.
From what ive seen Nintendo's only gone after projects when they're too close to what their doing internally, like with AM2R or that 99 mario game. (also worth mentioning those werent open source projects)
And I still haven't seen Nintendo go after an open source project. They haven't touched any of the sm64 decomp nor have they the Ocarina ones.