[gota]

In the most charitable interpretation of this comment - I can understand the feeling, when so much of social media interactions are in the form 'It's post a picture of you as a baby, 10 year old, and current age!'. Those and many other instances can bring out excessive skepticism

But the people involved in this haven't signaled that they are in that path, either in the message about the challenge (precisely the opposite) or seemingly in their careers so far

So I guess I don't share the concern but a better way to phrase your comment could be -

"how can we be sure the human-provided solutions won't turn out to be just fodder for training a RL model or something that will later be monetized, closed and proprietary? Do the challenge organizers provide any guarantees on that?"