Multiple Messiahs on multiple bicycles. There's not much point continuing this, seeing as you're convinced homosexuality is the same as vampirism.
From what I understand sexuality is but a part of it. Genders mature and develop at different times and rates, different moods and changes. That said, mixed-sex schools get along just fine, as do single-sex schools.
Also gender is split roughly fifty/fifty, whereas sexuality is certainly a majority/minority situation that I don't believe warrants segregation, and I think any segregation perpetuates negative attitudes, especially in younger people.
Certainly not the level of discourse we're having now, and certainly not within scouting troops. I'd say once the BSA gets rid of these unhelpful restrictions it will get back to the business of Scouting. The adjustment will be minor, unless homophobia takes up more time in Scouting than I know. Just guessing, mind
Oh I've no idea about the levels, you may well be right. I'd guess more religious organisations support it. Question is whether being exclusionary and fencing yourself off to a sector of society is worth it just to appease these organisations?
The rise of support and acceptance for homosexuals (and corresponding decrease in homophobic policymaking) has been blisteringly fast in recent years. I don't see it being a wedge issue for much longer, so I don't see the "tearing apart" happening here to any great extent.