1. They don't feel "tremendous shame and grief about it", you're just projecting. They wouldn't be doing it in the first place if that was the case, at least for the middle-class ones that I'm talking about.

2. The "significant harm later in life" does not stem from the (imaginary) shame & grief, it comes from the discovery when they inevitably hit The Wall that no high-quality mate wants to marry them, and that they have tarnished their reputation forever for a short-lived boost in income and attention that is guaranteed to fade one day. The progressive culture and their friends will tell them about "sex positivity" and that prostitution is just "sex work" like any other work, which it isn't. You will not agree to that of course, "I don't own her body haha".

If there is one thing to take away, let it be this: look at the people around you and their relationships, and observe what works and what doesn't. Don't theorize, don't moralize, don't judge, just observe and make up your own mind.