How could binance make sure that the data they are getting is not bots? I mean there are so many places that basically acts like they have huge sums of volume but in reality they do not, most of the volumes listed on the cmc is actually wrong and most of them are bots, but how can you prove it?

There is no tangible thing that you can show people why it is wrong, hell we even know this because we feel it is fake and we have seen the fake movements and some of us even been there, otherwise you wouldn't know about it by just looking at the numbers. Hopefully binance would find a way but I doubt they can, it is not something that you can see clearly, so it is going to be a very very very big challenge for binance to remove bot volume and only have the real ones.