To AZDR's comments, clearly we don't need social media, so we can live without it if we chose, but that's a different question to whether, if we have social media accounts, we should contact forum members via that route.
To the broader question, it's a valid cause for concern, if you have extensive contacts either business or family on the particular platform you may not want to interact with fellow forum members, or indeed with escorts who are not members of the forum. That said, I do have contact with a number of escorts on one social media platform (I was going to abbreviate that to SM platform, but the potential for misunderstanding...), and a very small number of other forum members. In all cases [of which I'm aware] they are 'in character', and some of those I follow, follow me back. For the most part I simply read what they post, but I occasionally comment on their posts, and with a few I have had pleasant two-way discussions.