People use fake names for good reasons - sometimes. It could be they attend a church, have friends and relatives, etc. - who are not universalists. And they don’t want folks to criticize, belittle them, etc.
I started out using my real name. Then I noticed most folks had pseudonyms. Then I said I should get in the groove. I couldn’t find that many Holy Fools and P-Zombies, to hang out with - on social media. Here I can introduce everyone, to Holy Fool, Zombie and P-Zombie culture. Like they say: When in Rome, do as the Romans do.
Actually, the move to a Facebook or LinkedIn group (or Yahoo group), is a good idea. You don’t need to worry about technical issues, like:
The server being down
Someone hacking the system
A now software release needs installing
Etc.
And you probably don’t need to pay for hosting. The downside is you are constricted by any FaceBook, Yahoo or LinkedIn rules and regulations. But that normally, should not be an issue.