I'm pretty sure there is at least one MLM aka pyramid scheme that is bragging about being a B-Corp which they use to try and ensnare new victims. That's all you need to know to understand that the "B" in B-Corp stands for bullshit and steer well clear of any that explicitly brag about that status (if your business truly acts in a manner that makes the world better you wouldn't need to buy a bullshit certification to prove it).