You and I agree. Don’t use social media and this won’t be a problem. I think the disadvantages outweigh.
But… what about when Hackernews or Reddit or Discord whatever formerly anonymous some-degree-of-social-network is made not so anonymous? I have a Reddit account that I’ve surely said things if someone was motivated they could make life hard for me - true things - but who cares about that anymore?
It’s not the same thing, but we might not be sure in what ways they are similar.
So an organization with skill and motivation, like government agencies vs some specific person with a limited skillset and motivation Who are you trying to "hide" from?
Simply having a different username for each website helps with that. Personally for Facebook / Linkedin I never list my current employer. Enough of a layer to make it harder to track my employer for the casual lookup, but not impossible given enough time/money/competency.
I really like this graphic about what level of security you want vs who you are trying to protect from: https://anonymousplanet.org/media/image3.jpeg