To add to this, remember that Ethan Ralph only attacks women so if Null's IRL waifu were to be doxed he would surely try to make her life hell to get back at Null.
We already know what Josh looks like, yet he never shows photos of himself anyway. Could mean he is protecting someone else from being doxed, though could just mean he doesn't want to deal with Internet crazies like Metokur does and keeps himself hidden in a shitty European country.
Well tbh, we don't even know if he's actually in Serbia. Has anyone heard the gay ambulance sirens lately?