The organization began allowing gay youth in 2013 and ended a blanket ban on gay adult leaders in 2015. In 2017, it made the historic announcement that girls would be accepted as Cub Scouts as of 2018 and into the flagship Boy Scout program — renamed Scouts BSA — in 2019.
I think two issues have caused them to take baby steps here.
First, there was a big lawsuit between the Girl Scout of America and the Boy Scouts of America. The Boy Scouts wanted to open up to girls, and the Girl Scouts felt like their turf was being threatened. That took years to resolve.
Second, scouting has deep personal ties for some folks. People can get irrationally emotional about changes to the program, as if there’s some sacred tradition at stake.