I don’t think anyone even has a problem with a competent female protag.
The problem is with starting out a series by proclaiming that this is the "strong female character" who cannot ever need a man, which precludes any chance to see this character as a genuine person on either the writing or consumer side.
That's why Rey failed. She was made perfect and powerful with no justification to the audience why she should be that way.
And there are hundreds of ideas online how to fix her shit, how to actually make her and Han make sense, how to make Finn an actual part of the fucking main plot etc.
The horrible truth is, it was all there, all on the table. The changes needed are not that big in the first movie at least.>why the fuck would Rey pick Han's ancient rust bucket and fly straight to him, let alone become his understudy immediately?
They already know each other! Han is an aged rogue who lost his family to being a moron. He would totally take a shine to a plucky little runt from the Inner Rim selling him scrap. So she steals the only working ship she ever knew the inside of and goes looking for the only person she can ask for help, finding him in much the same place she did in the actual movie.>How is she this fucking powerful out the gate but completely alone and shunned on a dust ball like Jakku?
She's a force aberration that subliminally manipulates everyone around her, which leads to people taking note and especially aliens who cannot be mindtricked by a human for various reasons would possibly see very clearly what this horrid child is doing, even as she never knows what it is that sees her rejected and isolated. That's why every parental figure in a 50 yard radius is drawn to her. She wants parents, she wants a hug etc.>How do we keep Finn even relevant in the movies?
He is the Last Jedi. Rey becomes alienated from the Rebellion when Kylo tells her what she is and temporarily falls to the Dark Side. Finn tries to win her back.