I disagree, I think that most boys do not have an issue with it, HOWEVER from my personal experience most boys want time with other boys without girls. For many boys this age it is a confusing time socially in many different ways, not just girls, and scouting is a great out from that, away from phones, in nature, wearing uniforms (no pressure on clothing choice), all meaning less pressure to act a certain way socially. And let’s be completely honest, majority of scouts are cisgender and would likely feel some of that pressure around people of the opposite gender. There is no issue with girls in scouts, but guys and girls should both have their time away from today’s social pressures and scouting provides that.