Once again, if he can receive money, he can do a background check on them.
That is not his responsibility.
Negative trust is a good wake up call for Woshib, the consequences could have been much larger if members didn't out the scams early on.
This "measure" does not have a single positive effect, but will rather lead to more and more BM work being settled via 3rd party communication platforms and posted by random lower-ranking accounts.
Whether it is Woshib or someone else, it doesn't matter. It's time to stop viewing things from a narrow-minded perspective.