I do agree, but kinda don't mind. It's not unheard for side characters to change a lot from early appearances.can't help the feeling ch.3 Miyako "change" to this Miyako, instead of "develop". Feels really like a retcon...
That said, this chapter is also only how she remembers and sees herself, so there's still some space for both being part of her.
Also, I just have to lol at people acting like she was given a printing press to produce money and not a timesink that is barely afloat and probably just making enough money for her and the kids.
Reminder that Ai died when the Twins were toddlers, Ichigo has been gone for over a decade, might even still have been living on company money for all we know, since we only ever see him fishing.
I still won't hate on him.