Originally Posted by
Kurando
I guess it's just coded in a way that regardless of what you summon, the name is still tied to the pet. Though it's not so much a problem for the SMN themselves as they know what they summoned, but other players that may not be familiar with the job or pets might not know which is which. Who knows if they have pet names showing on the field (I don't because the pet is already in the party list), so they may not see the name anyway without specifically targeting the pet in question to find out.
Also SMN can still summon Carbys until they get so far with their relevant job quests and then they change in to the relevant Egis, so the names are not completely limited to Arcanist having them.