Is there any reason why will binance will delist it? Other than the SEC which is from US? Binance as far as I know is not US base so I don't see any possible reason why they will going to do that not unless they surrender and they see XRP as one of the shitcoins in the market .with low volume trade that they can add in that exchange. The daily volume given in XRP in any exchange is high so it's not that easy to surrender a coins that can give them high earnings in trading fees even the price decrease.
Of course they have their Binance.US exchange, but being the biggest exchange now and seeing how other exchanges are delisting XRP, it's just about time that even Binance will succumb to the regulatory pressures here.
Are they willing to be the one to accept XRP when all things around them are delisting them? They might get a negative connotation about it and it might hit their reputation as well.