In all honesty I think GT have had this standing reputation for a long while that they are kind of the entry level, dime a dozen, can find anywhere cichlid. I think a lot of people moved away from them to more "advanced" or really just more aggressive cichlids like the ever popular festae, jags, medevils and so on. I don't have this opinion personally, but I have heard it from different places.
I'm not sure if they're becoming more appreciated now, at least on MFK, or its just another slew of new cicihlid fish keepers. But it looks like we should be seeing a lot more mature GT here over the next year or so.