I'd usually push back on stuff like this but he has a point. An alpha male friend of mine would often tell me that when he was younger, women ran him. They'd have his head so twisted that he was nothing but a fool for love. But now it is easy and he doesn't even have to work anymore. This isn't just about sex, it is about women going out of their way to please a man who has done zero work. He's had women offer to cook, clean, do laundry for him, and pay for dates early in the courtship process. Women also agree to exclusivity too soon because we don't make the man compete with other men for our time.
But I don't believe the game is messed up for all women. Even these men who can get sex easily are still chasing some woman. There is still courtship going on. If these men are so disappointed in how easy some women are, they need to start pursuing quality women. It's like blaming fast food joints for why you're overweight. There are still farmers markets out there.