Not the least petty. You have placed items out there and like several others now you’re finding leeches. It appears to be spreading and it sucks because it will ultimately kill off the openness we enjoy with Thingiverse and other sites. These sites have allowed me to quickly find files I can learn with and garner ideas from. It sucks that individuals want that to go away for greed. In the end nobody will post stuff and they wont make any money. Leeching is a lose/lose proposition. Sorry it has to be really frustrating givent he time you have in especially.