Don't be confuse , this account controlled by
theymos (admin). Not important what is rank. You can see account name is
theymos_away . This name is explain everything. Probably he use this account when he away from office or home. I mean may be mostly this account he use for emergency case when he stay out side. You can check on his profile admin note:
This account is controlled by theymos, but it is less secure. Do not do business with this account
So obviously he is an merit source, no doubts about it.
Regarding limits calculation, it's depend on admin. Mostly merit source not abuse merit system. If in case abuse than admin can cancel any merit source at any time. If he feel it's really abuse.