Same story with 99% of Japanese studios and publisher. Japanese businesses in general only care about the Japanese audience. If they like or dislike something, that's all they care about regardless of if they have giant western audience.

Japanese gamers still aren't too hardcore on PC gaming. They're mostly console gamers. And if they play on PC, they'll probably go to a cafe. As long as they have a culture of thinking about their international markets as an after thought, we're always going to get dodgy PC ports from Japan. Look at Squaresoft ports, one of the few companies that actually does care about the west. The Nier Automata port is shit without mods and still kind of shit with mods...

They're getting better very very slowly, but I suspect it's only due to pressure from western publishers. That's just speculation though. But in most cases you have to be weary. Like...if the game is even a good port you have to get lucky and hope the controls are good.