Instead of "I'm struggling to take this in good faith" you might try asking clarifying questions; it's less rude that way.

Talking about goals is a way of suggesting that sex isn't competitive. It is simply an act, with what meaning humans impart.

> It’s impossible to disentangle reproduction from sexual behavior

Gay people beg to differ.

I'm not going to engage in generalities about how people affect each other; the subject at hand was a philosophy that encourages people to feel badly about themselves if they're not having sex with a "10", with an analogy to beauty product advertising. The claim was that subscribing to that philosophy was a choice. Happy to hear your thoughts regarding that.