I was definitely not thinking of sexism. I was definitely thinking of it being rather cliche.
Oh ok. I thought you were kind of emphasizing the fact that it was a woman's fault in your post and I thought you were going towards something like "this series thinks women are the cause of all problems" or something. My mistake.
Reading it now, sort of makes Obito's motivations (currently) rather cheap. At this point, you could have had Sasuke and Obito reverse rolls and that would make more sense.
Obito never had a clear motivation for turning evil before this but now he does. It's cliched but it's at least something. He seems like the kind of person who would only be swayed by someone close to him dying anyway.
I do see the parallel with Sasuke, but I think that's intentional. Team Minato and Team Kakashi were always meant to be parallels of eachother. Look at the structure of both of them - they both are taught by a talented ninja who is extremely well-respected by his peers and they both consist of a spiky-haired goofball who isn't as talented as the other two, a bishonen kid who is all serious business due to some personal tragedy, and a girl medic who doesn't really do anything important aside from be a point of conflict between the two boys. I think that now Kishimoto is kind of using Team Minato as a worst-case scenario for Team Kakashi - The original leader and one of the members is dead and the other member is evil. Similar things are happening right now with Team Kakashi - The leader died once (
comic book manga death lol), one of the members is evil (I think Sasuke's still evil at least, we haven't cut to him in a while though so idk), and the ninja world is finally at war which also puts Sakura's life in jeopardy. The only difference here is which member went evil and why. Presumably Kishimoto will introduce a next generation of ninjas at some point where the useless girl character becomes evil after the bishonen dies.