you are right. binance is a big platform but too many shitcoin listed in binance.
Yes, they can avail to pay Binance listing that's why they know that volumes there will help them to become better.
You maybe right because some traders follow coins listed on big exchange site but those are inexperienced traders that invest in project base on hype cause some IEO launched on Binance are not profitable not to talk about the priject which imitated others crypto related project concept.
It's in the discretion of investor and trader. But we all know that people get crazy when something will be on Binance.