Something like that. I think the iOS version was pulling in money via microtransactions and they paid more attention to that. A lot of the players that stuck with the PC version had Lifetime Classic subscriptions they were grandfathered in to and didn't plan to pay for membership anymore. That, and the restrictions for F2P players seemed to be reduced after a while. Somehow servers were able to get rid of observer mode. I used to think those restrictions applied across the whole game and couldn't be changed.