Florida reader,
We had a pretty good dustup over the Michigan Recording Project releasing some audio recordings and having their private research area outed. I can imagine the consequences if someone brought in unambiguous evidence that BF are visiting their property regularly. It's one thing if you invite visitors, another if they invite themselves.
Much of the hostility aimed at backyard witnesses smacks of jealousy IMO.
If someone came on here with strong evidence, they would be hiney deep in self invited researchers before you could say boo. We've all seen it happen. The trick here at BFF is to hook up with people you come to trust and network privately.