This, probably:


Though most of the bounty campaigns ask to submit reports in new posts every week (I know this because I checked a lot of them just now to find the reference I'm using above), but some of the old hunters still use the same pattern to post their reports, and the ones coming after them are simply copying their pattern without even reading the rules themselves. If we talk about this bounty from where you picked up the reports pyramid of sheynlee18, it doesn't even ask for reports in their thread, but they ask their participants to submit their reports through google forms:


But it makes the fact clear that the current bounty participants don't even bother to read all the rules before joining them, but they simply fill the form for joining and start tweeting/retweeting and stuff, and when the time comes to submit the reports of the week, they just simply copy the pattern of someone from another thread or they may even have a pattern saved somewhere in their computer which they use to submit their reports for every campaign which is why all their reports look exactly the same in every other bounty campaign they join.