In all honesty, in my opinion, you're overreacting here ...
Going from some bad experiences you had as a kid, to calling people scammers and thieves, because you think you see red flags, is over the top.
Also, you realize, construct is a tool enabling a single person to do all the work for a game? Audio, video, mechanics, animations....
We literally have 1000's of developers doing just that.
And another thing ... who determines when a prize is sufficient enough for the time and energy put in?
The prizes are known up front, you can determine yourself how much time and effort you put in.
I see you don't want to debate this further, but it's a can of worms you opened yourself.
I think folks like you is why we have participation trophies.