Some commenters are saying Binance did this intentionally, claiming that if they really wanted to catch insider trading, they could easily control it. That underestimates human greed and the difficulty of effective control. Fighting insider trading is a long-term endeavor for all centralized exchanges (CEXs), the only difference being the intensity of their efforts. Binance has actually had a good reputation in this area, and OKX is also quite ruthless in its anti-corruption efforts. Just a few days ago, Lao Xu personally mentioned an internal anti-corruption case to me:

This time, Star got dragged into this mess 🥲. I honestly don't know who this guy is, so please don't ask. I just happened to be writing about this topic today and remembered something he said a couple of days ago, so I mentioned it briefly. This is... freaking...

This one...maybe I should delete it.