"Sure thing kids, go crazy. Do whatever you want! Good luck! You'll need it!"
[Kids post to kickstarter and get tons of funding. Mentor decides that maybe he wants some of that action.]
How much funding had been pledged before Kickstarter pulled the plug?
"Thanks for all your help help, Mentor. We'll be off! [And we're taking your designs with us!]"
"Sure thing kids, go crazy. Do whatever you want! [I don't know that you're taking any of my designs to create competing products.] Good luck! You'll need it [because you don't have any designs and it will take you a while to come up with good ones]!"
Kids post to kickstarter using their mentor's proprietary designs, and get tons of funding to make products based on their mentor's designs.
Mentor sees them stealing the designs he spent months/years working on and sues.