You can't take back your account since it is a permanent ban. Maybe the mods able to know that both account has one owner and sadly you have committed mistakes for both account.
As you have said that you do have read the rules, yet you choose to still do it. This may sound appropriate but since you have created that account you just have to continue using that one and start to change(Tho , If am not mistaken creating another account after a permanent ban still has sanctions
Aside from the bounty and airdrops, what's the upside of having multiple accounts?
Alot actually, one example would be if the owner has a certain site to advertise or a service to give. One way of doing it is to create a new one to separate your posts that was intended only for your services or ads