Up to us to do our diligence because if Pancakeswap was in full control over the coins that are getting listed or not, there would also be complaints when Pancakeswap decided to not list a certain coin that the community wants to see listed. Also, what if Pancakeswap makes a mistake and lists a scam without knowing? They would have full responsibility for any harm done. Not a great position to be in. It's a great service and I am ok with doing my own research.