How many times have I told you, I have never stated that this was a ‘godly’ method. Unfortunately, it’s a method that works in keeping the audience attached every now and then. Its the result of their culture. To judge the people reading this stuff without knowing their culture would be quite arrogant though.
The problem with your comic book heroine examples is that they “save the day” no differently than their male counterparts (plus I highly doubt you’re talking about their modern comic book reincarnations

).
Besides, the goal here is not really just “female strength”. It can teach guys not to mess around with them. (e.g. When you break girls’ hearts, they get back by breaking your legs.)
Oh and I really hate to say this, I really do, but I’m afraid you need to be aware of the reality that “family-friendly” stuff like that gets less and less artistic praise in this century. (Unless your target audience are aged 7 and below

). If I’m going to be an anime author with that type of restriction, I might as well just write the script for the next
Dora the Explorer.