The New Scouts Oath:

Why LOOK! He's got jug-ears just like PRESIDENT JUG-EARS!
Clearly, the Scout "leadership" calculated that they would lose some members/charters. And it's also clear that they figured that with the media's relentless selling that "being gay really is a normal thing and it's okay" that, in time at least, membership would climb back to where it was.
Doubtful, because I think that in the vacuum that this decision leaves, an alternative to BSA will arise. And that's just what is needed here -- an option.
If you want your boys to be around faggotry, the BSA is for you. The alternative is for parents and adult leaders who still adhere to a moral code that, while addressing sexuality in a suitable way (I believe the Scout merit badge that this addresses is called "Family Life"), still adopts the idea that traditional relationships are traditional for a reason.
For 100 years, there really hasn't been any sort of equivalent organization to BSA. Not in the same vein, anyway.
This could very well be the thing that the country needs. Competition.
Nevertheless, Lord Baden-Powell has got to be appalled.