I appreciate your skepticism. It certainly sounds too good to be true. Unfortunately I only had 2000 characters to get everything down but happy to clarify any questions you have.
Instead of a chemical that directly activates sweet receptors like other sweeteners, this protein binds to your sweet receptors for 30-60 minutes and activates it in the presence of acid.
I'd be happy to send you samples to see for yourself in the return for feedback on my MVP :)
Edit: I'm also backed by Pioneer so hope that makes it look a little more legit