Will they be held to the same standard? I presume they have signed some sort of contract which garantuees listing until X?
Even if there has been a signed agreement, I'm pretty certain that Binance has made sure there are enough holes in the agreement that will allow them to delist any coin whenever they think it's either fraudulent, full of bugs, or too stressing on their platform.
On the other hand, it's unlikely that Binance will actually work with signed agreements, especially with how it can be used against them as extortion tool. Projects can use that against Binance by reporting them to regulators as in they accept payments for the listing of securities and whatnot. I think Binance is smarter than that.
Looking at how many garbage coins Binance has still listed and don't generate worthwhile volumes, it surprises me that they haven't delisted more coins.