I consider it a blessing. It means we never need to argue about these things. Go's go-fmt has the same philosphy.
That philosophy works better when the style you enforce is, if not happily accepted, at least not moderately controversial. Otherwise many developers will choose simply not to use x-format—or worse, be turned off from the language.
In such layout-block languages (without curly braces and semicolons for denoting blocks and "statements") it shouldn't be a big deal one way or the other anyway..
Well, just look at the thread-derailing peanut gallery explosion in this very comment thread to see it's not such a bad idea to limit customization.
People can live with different tab lengths. I'm not so sure every project needs to be bike-shedding about it, though.