The Devs simply can't win. If they lower the bonus they will have it the other way around: People stating it's ridiculous and that there's almost no incentive to go on the goody hut hunt (meh - lame!
). As always when a new civ comes out there's a discussion concerning "random events" or bonusses based on luck, eg getting that Goody Hut.
To me it's fine - Sure it's a big edge in the early game but why not?
Why not argue against natural wonders, too? If you're lucky they're nearby and you can build your holy district right next to it with a bigger bonus? Other players won't have that chance, unfair...
Taking that approach over the edge would mean arguing that every civ needs the exact same starting location to get comparability - same surroundings, same ressources, no isolated starts and so forth...
I prefer the greater diversity when it comes to civspecific bonusses, UU and abilities, too. And you have an edge on faith if you play as Spain with Phillip II. Nothing's wrong with it, I welcome the higher impact of uniqueness (so it seems) CiVI will offer.
Luck is a part of the game and it's fun to catch up when lying behind! And it's also fun to be lucky as long as it's not a gamebreaker - If you can win solely by luck (which I highly doubt!) then it would be another thing...