My son (11) is in his first year as a Boy Scout (or whatever it's called now) and there are about 1/3 girls in the troop. He was in a unisex Cub Scouts since 1st grade.
They separate the boys/girls into "patrols", mainly due to grouping them for camping.
My son doesn't really like it, mainly because the meetings are weekly and they reprimand you (supposedly) if you don't make it to 3/4 of the meetings. We're gonna stick with it only because he likes to hike/camp and I feel there are good opportunities to speak to groups and work with different types of people (age, gender, ethnicity, etc.). Plus the only other outlet he has is flag football. Would rather him have some other things going on to keep him off his stupid iPad.
Does your troop do a week at summer camp? Usually if we get a scout to attend summer camp that first year, they come back amped up and really get a lot more out of scouting. The ones that don’t go for whatever reason (some valid, some pretty lame like “my cousins birthday is that week”)
If they go and they hate it, well, at least you tried something new and you found out early you don’t like it.