The Joketsuzoku/Amazons don't consider males to be equals, looking down on them as second-class citizens at best and treating them as slaves and/or breeding stock at worst.
We really only have Mousse as an example
Cologne is willing to use lethal means or make someone suffer, in order to get Ranma back to their village, as only a villain would.
Cologne could be considered a villan, or even a bully, under the right conditions.
Happosai's behavior was all just a means to test someone's (Soun's and Genma's, and later Ranma's) character, or was something that he faked for another reason.
Happosai has shown to be whimsical... this is not beyond the realm of possibility.
One of the girls (especially Akane) either starts out as a lesbian/bisexual at the beginning of the series, or it's discovered later that they have been that way the whole time.
It does explain things... but at the same time it does not... Akane is shown to be nice to just about everyone except Happosai, Kuno, and Ranma... she is shown being nicer to her enemies and to her kidnappers than Ranma...
Personally, while not overly caring for this method of separating Ranma and Akane (or an author push for a same sex relationship using it), as I feel it a bit of a easy cop out for some authors. I am not entirely against it either.
When an author makes Akane treat Ranma as if she actually loathes him (when she doesn't), and she doesn't realize until it's too late what kind of effect her behavior would have on him.
I fail to see the distinction from canon, except perhaps degree... seriously, how she does treat him in canon is pretty deplorable (see above for note she treats enemies and kidnappers better)... even forgetting the hitting, there is no real trust, there is plenty of insults... all it would take is for a session of insults to go a little too far to blow the whole story into a new direction.
Certain martial artists in Nerima are actually referred to as the "Nerima Wrecking Crew" without any real basis or plot development to explain why.
That we as readers know this is somewhat to be expected as fandom knowledge. I fully admit it gets annoying when it is either already known by that name inside a story by characters that should not be aware of it even outside their group... like a sailor moon crossover that uses the term before even having met any of them.
Mousse isn't the only one to know the Hidden Weapons technique, just because various characters pull things (usually gags) out of nowhere. (But characters who the author doesn't deem to be skilled enough to use it may just get a reference to using "stuff space," which serves the same purpose. *Eyeroll*)
That females in general can use stuff space is not *Ranma* fanon convention, but *fan fiction* fanon convention from many fighting series or those dealing with hyper and or angry females displaying wrath. A magical equivelent is pretty much a no brainer in shows like Sailor Moon as well, otherwise where do the Henshin, the wepons, and the non-transformed outfits go when they transform, detransform, and pull or hide weapons...
That Ranma could learn it is not so bad, considering his learning curve and fact he is female part of time... I even remember a fanfiction that made fun of fact he could pull a mallet out of pocket space, but only while mad and female.
Saffron is referred to as being a (demi) god/kami, especially if it's used to illustrate Ranma's power and/or accomplishment.
This has never really bothered me.