It really seems like Gamefreak just can’t handle 3D games, but they’ve been forced to since the Switch is now the only main platform for Nintendo.
I feel like the games would really flourish if they were taken away from Gamefreak and given to a different studio to handle.
They get like 3 years between each major title, that doesn’t seem unreasonable. If they’re overwhelmed by remakes and side games then they need to outsource those parts, but maybe they’re worried about being shown up by another studio.