If a man is shitty enough to ghost you after fucking you for the first time, he will do it no matter if it's the 1st or the 10th date. Withholding sex from him is just a way of delaying the inevitable.

If you don't hookup in the first date under the excuse that you fear being ghosted, it's okay.
We get where you are coming from, but... Keep in mind it's just a way to delay the inevitable.

I know this piece of advice has good intentions in the theory, but in practice way it's not good advice.
Because if you have the bad luck of crossing paths with a man who wants to pump-and-dump you, he will do it as soon as he gets what he wants... no matter how soon or late he got it.

Telling women to delay the first hookup the longer they can maybe an well-intentioned advice, but in reality it's a huge roll of dice. If the man is good, he will stay. If he isn't, he will ghost.