Neither viewpoint is 'wrong' because all individuals are different. Yeah, even men 😄
It's a big mistake to think of sex as a bargaining chip, though. If your strategy's successful, you end up catching a guy who sees sex as something a man gets from a woman. Like it's a favour you do him, maybe even owe him.
You and your sexuality are worth more than that. Do it when you want to, never when you don't. There will be times when you want sex with a guy who isn't partner material - if he wants sex with you too, that's fine. Your body's for you to enjoy. There will be other times when it doesn't quite feel right, or not yet. This doesn't mean anything in relationship terms. It does mean your body doesn't want sex with that man at that time. Listen and honour it.
I won't bore you with my many & varied experiences, but I will share the most valuable thing I learned: Stop thinking of sex as 'being done to' and 'being penetrated'. Switch, right now, to 'doing together' and 'enveloping'.
You and your body decide. If you wanna 'blend' with someone, do it (safely). If you don't, and even if you start but then don't want to continue, knock it on the head.
Have fun 🙂