w/o context, I can see why you would be upset at these points; they are utter trash.
I know almost all of the girls I have played w/ get asked whether they can share selfies or nudes even. I have seen some of the chat messages they get from seemingly normal people and it is disturbing HOWEVER, all of these were by teenagers in their early teens asking for pictures and what not. If an adult knows that the age of the girl before them is very young and then proceeds to ask them for nudes then you know you might have a pedophile at hand; teens asking other teens for nudes is fairly common as far as I have seen in the last year in LoL.
Of course, adding someone on your friends list doesn't make you responsible for what trash is being thrown at you. Often times people add after they noticed a player who was very positive in their last game and after the ice is broken b/w them, things like these come out. Possible entirely and not the fault of person adding; just remove them and move on. I don't think young children really interacting asking for selfies is threatening; like I said, if an adult seeks these out from these kids then you have a creeper but even they can be blocked. It is not your fault for adding them. They asked, you removed them from your friends list; move on. No harm done.
The second point is also ridiculous; sexual harassment is not limited to just what you listed as others having posted but again I think the doubt arose about whether there was any sexual harassment. From what I seem to gather, there didn't seem to be any as she immediately just blocked him after he asked about her sexual practices. Was it appropriate? Nope. Was it threatening and/or bordering harassment? Nah. He asked, she said no, and both moved on. Done.
I'm going to stay away from the topic of respect for women versus men. That's just playing with fire.
Of course no one should have to hide their sex ideally. Although if you already know and have seen "harassment" based off of your sex, then do not disclose it to others; that is a good way to get by. It isn't ideal but it is something you can use to not get bothered yourself. Only reveal it to those you have gauged for a while in your friends list? Point being sex definitely should not be a basis of harassment but while that ideal world is, hopefully, on its way, just be careful in who you reveal your sex to.
I am sure most people would not be okay w/ an adult for asking sexual pictures off of a little girl. If it was another young one asking for pictures b/c of whatever reason, then you assess the matter wrt it being threatening or nearing harassment or demeaning etc.
I am sure most people would say these points are nonsense just as you concluded; I think the reason it was such a back and forth discussion was b/c people differed on whether there truly was enough substance to merit sexual harassment in the original post. I personally think if she had made it clear she was not open to such questions and still they were directed her way, then yes it is sexual harassment and deserves penalties by Riot. From what it appears, it was a single question from most probably a virgin boy and he got what he deserved: she blocked him and shut him out.
Best of luck to you and the girl who posted this originally as well.
I totally see and understand your point of the internet not being as easy for women.
You should check this link on YT out by the way.
https://www.youtube.com/watch?v=JCLi6vSIuPE
I hope posting links is NOT an offense; I'm still new here.