If you're working on highly technical problems no one is going to understand what you're doing anyway until you're basically at the stage where you're so polished you can spoon feed people everything... By which point you probably don't need any outside assistance. If you look at what goes on at Pioneer it's basically the startup equivalent of Instagram: lots of glamour shots with no actual substance. And at the end what do you get if you do manage to "win" something -- nothing that would help you out beyond what you can already do mostly for free yourself.
I found the app more useful as a diary than anything related to its intended purpose. And I don't really have the time to dress up boring engineering challenges to "advance" in the tournament. For what it's worth, I've checked out a fair few of the projects part of that tournament and there are some gems there. But I'd say the quality overall is low and the platform is more geared towards marketing bros than complex research or engineering projects.