DARPA funded the project, and DARPA fund lots of projects. I think a debate about whether DARPA is good or bad is pretty out-of-scope for this particular work: we made a game that might show how software verification could be crowdsourced.
The games do try to be fun, that's why none of them are "look at this loop and write an invariant". Xylem dresses up the problem statement as logic puzzles that surround the growth of exotic plants. I don't have an iPad to play the final version of Xylem on, but we tried hard to come up with a compelling game.
I don't believe the expected player base really cares about whether the project was funded by DARPA or not. I understand if you don't, but I think you would also have to stop using the Internet if you have such an issue with DARPA funded projects