Facebook doesn’t care for your name. Yes, you can make a fake account. But that’s against their TOS, you could get banned.
Facebook is all about data. They sell all the data connected to your account. The name doesn’t matter, it’s just the raw data they care about.
There was already a topic few months ago, where I wrote some stuff regarding the Facebook agenda.
https://discuss.eroscripts.com/t/new-vr-headsets-are-upon-us-which-are-you-getting/4676
A pretty much TL:DR is: If you don’t care about Facebook’s business practice and you don’t value your privacy that high and you just want a cheap VR headset, get the Quest 2. Otherwise search for alternatives.
I can’t give any answers regarding the Quest 2, when it comes to addons, since I don’t have one. I live in Germany and Facebook doesn’t sell the Quest 2 here.