But I too have a hard time trusting this.
First, because I feel that Swift has been a boondoggle that everyone was forced to accept and now it's just normal. I'm still not convinced Steve Jobs would have given Swift a go-ahead (release).
From the start, Swift felt like, as a language, that it didn't know what it wanted to say, with a big part of that coming from having just taken a kitchen sink approach to syntax and features. Looking at their same code, 4 lines of python becomes like 12+ lines. I'm not sure who this attracts.
More importantly, he clashed at Tesla. He left a gaping hole in the Swift Tensorflow stuff at Google. He also left Apple and promised that he would still be involved in Swift, until he got pushed out.
It's not that he isn't productive or brilliant, I'm just not sure I trust someone with a track record of being volatile as a great maintainer of a platform.
Overall, this appears to have the same markings of the Cappuccino web framework project.