Actually, why wouldn't people working in porn and porn adjacent industries send porn related content to each other in DMs, totally in a professional context ?

What on earth makes you think people working in porn and porn adjacent industries behave "in a professional context" on LinkedIn, when nobody else seems to?

What does this even mean?

I believe it was a joke. Nobody acts professionally on LinkedIn, therefore why would that industry stay on topic?

If a program has a messaging system, it will be used to send porn.

Good ole' TTP

Yeah, isn't this Cummingham's Law?

Based on the number of guys who think LinkedIn is a dating site I don't see why there wouldn't be people who think it's a porn sharing site.

Every site that allows commutations will be used as a dating site.

Sometimes you might be identified on the site and then communicated with on another channel.

The only thing not used as a dating site is dating sites.

Those are for prostitution. (Somewhat /s)

Given how many people are on LinkedIn, would you doubt that women on the platform sometimes get sexually harassed in DMs, e.g. by people sending them porn?

Yes.

Unless it’s a burner or malicious account, I can hardly imagine someone being that courageous to sign death warrant to their career if woman decides to call them out and it goes viral.

Sadly, you underestimate just how stupid some people get when they're horny.