As I said earlier, I don't think gender-segregated events should exist in a balanced world, but I don't have a problem with them when there is a great imbalance and they have the potential to tilt that balance back towards equality (by existing temporarily). The whole idea of them is to create an environment welcoming to girls and get them interested in coding. I don't particularly care whether they do this by promoting only to one gender or explicitly allowing only one gender; that's logistics. I care that if we can provide more girls and women with an accessible pathway into software, that's a good thing, because once CS classes are and industry are more gender-balanced, we won't need these types of camps.
Calling it "weakness" to gravitate towards something that other members of your gender are doing is misplaced, in my opinion. My computer engineering classes were roughly 95% male and I'm not so naive to think that those were exactly welcoming enviornments for women.
To deny these pathways is to claim that the status quo is fine and that this inequality is either meant to be or will somehow solve itself. I don't believe either of those things.
I don't really understand what "handicaps" the existence of an all-girl coding camp represents to men or boys. There are a plethora of options for us/them. Who is getting really, genuinely hurt by this, in your opinion?