Besides all that drama of OP:

Wouldn't that be THE BEST social media community where messages like that would actually happen? I would love to be a part of an open undivisive group of people who would write things like "Hey, I'm Joe, I do this and that and noticed you, lets band if you like" or "I'm jenna, I do the creative work for XY instance, lets connect". That would be really cool. The problem is as always that we can not trust these messages because of the last decade of misuse on various platforms. Even if we take out all the scams, we only accept the right message in the right medium: If someone would write me what OP posted on LinkedIn, I would read it as a business inquire connection (at best). If she would write me that on Tinder&co, I would take it as an avance. If I would get a message like that on facebook, I do not believe in it as a honest request anymore. On Insta I would read it as a scam too. But where is the place where I can get a message like that and trust it as it is the norm in that social network? McLuhan said "The Medium is the Message". We need a Platform/Network/Medium to give a room to actually send a message like that where a connection without the aspect of business or sex is assumed because of the choosen Platform/Network/Medium.

The Fediverse will not solve this problem sadly, as it is mainly just decentralized, but is not out to solve societary tilts and disgraces. But it is nice to think that such a place/site/room could exist (one day?) where a person (even of another gender) could have an exchange like that without bad intentions. As usally, The good ones are silent, and the loud ones are scams.