And have spent actual years putting real effort into SA while having no recourse against the power now wielded by the individual in question in the organization. If I had been there from the beginning I'd probably be pissed enough not to come back too; though I have had two accounts auto-deleted due to losing interest so take that with a grain of salt.
The thing about SA is the true power comes from its player base. If someone founds a new astroist inspired religion now they have a good shot at having it spread like wild fire. That would itself be a continuation of the SA people spent so long building. Sure the temples will be smaller at first and it will take a while to convert the peasants but eventually the new church will catch up to the old one.