I have one of these and it was really nice in the first 1-n years.

People gamified it and then it sucked, but the idea wasn't so bad. One would expect people would not stoop this low for a free T-Shirt.

There is no limit to how low someone will stoop to get even a tiny token for free. I remember a local community fun event from a couple of years ago, which was set up by the library to encourage kids to read. They would count up these reading tokens at the end of it and give some tiny $2 teddy bear to the winners, and of course a bunch of adults swooped in, gamed the system, and all the toys went to them. People are totally shameless assholes when even an insignificant free prize is on the line.