Imma just ignore the backhanded accusation of milking there, and address the one point in your argument worth addressing, which is that as far as I can tell, these Japanese games that come completed do so because they're produced by actual studios operating on a business model of securing funding from investors and publishers, hiring a team to produce that game on budget. Their business model is a traditional one: invest to produce a completed product, then sell units to recup and hopefully make a good profit on that investment(...) This is why i stick to japanese games, at least most if not of all of the them are released in a completed state, in contrast with Patreon ones which are the inverse and even some of those completed games are just rushed endings or they're outright axed (...)
Patron backed games, OTOH, are passion projects, in spite of your claim otherwise. They're usually single developers, sometimes small teams, and they are not run as studios, and do not have their financial means. Without the patron model, these games simply wouldn't get made at all.
All of which does nothing to invalidate your opinion, it's fine to feel that way, let me stress that. It just seems to me that your lack of understanding of the business models involved leads you to compare apples to oranges.