This makes me happy:
"All these worlds share characteristics, but each world is set apart by its own history and cultures, distinctive monsters and races, fantastic geography, ancient dungeons, and scheming villains. Some races have unusual traits in different worlds ... Some worlds feature races unknown in other worlds ... Your DM might set the campaign on one of these worlds or one that he or she created. Because there is so much diversity among the worlds of D&D, you should always check with your DM about any variant, additional, or prohibited classes, races, and other character options, or any house rules that will affect your play of the game. Ultimately, the Dungeon Master is the authority on the campaign and its setting, even if the setting is a published world."
[
Black emphasis by [MENTION=4038]God[/MENTION] , but just as well for me.
Red emphasis mine.]
And me as well. This makes me VERY happy. Whether I have any interest in incorporating or using any sort of multiverse or planes-traveling in my adventures...THIS has been a statement waited and looked for since the beginning of the 5e material.
Love it!
The "everything and the kitchen sink" approach WotC took in late 3E and 4E, as well as the entitled "my special snowflake must be allowed in your campaign" mentality overtaking the Paizo boards right now both drive me absolutely crazy. Guess what, kids, there are no kitsune or kender on Athas. The halflings ate them.
This is really two statements. To be fair, the "everything but the kitchen sink" was alive and well, and in some cases
desired, at many tables [I'm sure] in 1 and 2e. I know every new book or supplement that came out [since, as we all know, there was no internet back then. We were just hammering out PCs on our stone tablets

] in the late 1e/early2e era, I must have heard at least one player say "I wanna be this/that/the other."
As for the dreaded and lamentable SSS ["Special Snowflake Syndrome". It is a medical condition! Lookit up.
![Devious :] :]](http://www.enworld.org/forum/images/smilies/devious.png)
] That, I'll grant, IME was more of a 2e, with the class-specific "kits" splat books and race books and setting books, onward thing. But it kinda began with 1e UA and allowing, ya know, drow and svirf PCs...OH if we knew then... [Thanks Salvatore! DYING IN A FIRE IS TOO GOOD FOR YA, DRIZZ'T!]. If it is now infecting Paizo, that is very unfortunate to hear.
But I would be cautious to not conflate the "kitchen sink" and the "special snowflake." One is, potentially, good free-range fun fer the whole family [i.e. "table"]. The other is evil incarnate.