Yeah I feel somewhat the same way. This looks like some serious engineering effort went into it, and it looks like there should be a way to measure its impact on developer productivity and quality of output. I'm a bit hesitant considering finance is not an industry you want to introduce security problems in, but nonetheless will be a good test of these tools.
If it really does work I expect there will be many paid and open source variants that other companies can adopt into their workflows. So I'll patiently wait for the outcomes before trying something like this, but I'm glad someone is.
I think most people don't have an issue with the models themselves, just the big service providers who are up to some very shady and possibly illegal stuff.
Personally I'd rather a future where everyone used local models.