My 8.2 mount collection launched pretty well! Though I slept long because I spent most of the night farming TW for alts weekly quests, I just woke up seeing that my friends from Discord were in a group for Fabious share! I got invited and summoned.
If you see Fabious spawn and feel generous, feel free to aggro him and invite other people. He is shareable due to his mechanic of obtaining and doesn't despawn, for now, as long as he is held in combat.