Asmodeus, Orcus, and all those archfiends with True Names… Please tell me those are still not meant to be their true names?

so quick question: when we talk Asmodeus, Orcus, and all those archfiends with True Names… Please tell me those are still not meant to be their true names? Because they’re so well-known in my circles of D&D friends that I can’t say “learn it in-game” if they are./ No, those aren't their truenames. ;}

— Ed Greenwood (@TheEdVerse) May 14, 2019