It is often claimed, by proponents of sex-integrated Boy Scouting, “the whole rest of the world does it and they’re doing ‘just fine’ .”
This is simply an attempt to bully fathers and it is demonstrably false.
Take for example, the experience of Scouts/Canada, the ugly revisioning of the “Boy Scouts of Canada” as named by an Act of Parliament.

Capitulation to feminism decimated the Boy Scouts of Canada, losing 75% of its membership as boys and their families were deliberately driven away.
Feminism succeeded in forcing females into Canadian Boy Scouts’ Rover section in 1972, the same year our own BSA imposed girls via the Explorer program. Venturers were attacked in 1984 and Canadian girl Boy Scouts were imposed in 1992.
As always, what started as a local option would soon became mandatory via edict. In 1998, all Canadian Boy Scout units were compelled to accept girl Boy Scouts.
This chart speaks for itself. I note it is the pattern seen in every men’s group compelled to accept women members.
Once feminists gain entry, it is inevitable the organization will die, or become worthless to its original purpose.