Bguy7
The Dragon Lord
Primal Reversion reverts the Pokemon to a state of primal development, where the Pokemon was at it's peak of power and tyranny. Kyogre and Groudon went dormant in their primal days which changed them into what they are now, losing power through their dormancy and such.
I know, that's what I thought Sakuraba was referring to.
If we were to go by that logic that they revert based on past genetics, Mega Aerodactyl should be donned a primal, as it's Mega awakens it in a sense and reverts it to what it was in prehistoric times.
Since when does Mega Aerodactyl have anything to do with its prehistoric self?
It honestly probably should be retconned into a primal, as all prehistoric Pokémon should eventually get.
Not really. Primal Reversion is a thing because Groudon and Kyogre fought over special primal energies. It is that energy that allowed them to obtain the power that they have in their Primal Form. Rayquaza not being a part of this fight is the reason that it has a Mega instead of a Primal. Primal Reversion is lore-locked into the duo, and it would make no sense to give it to other Pokemon.