Crack seems to be a product people gravitate towards, but that doesn't mean it's a good product or beneficial for the user.
Furthermore, their preference is the one that is consequential. Once you are addicted and chemically compelled to choose crack over what is more or less torture, the amount of agency you have is relatively insignificant.
The OP's point wasn't about ads but about the algorithmic newsfeed. The newsfeed is designed and optimized to make you like scrolling. So, yes people do like to scrolling but hate it when they realize that it might take you 20 minutes instead of 2 minutes to get to your best friends new baby announcement. Sure, ads contribute to that frustration, but they aren't the sole reason for it.