Apple only sees developers as a revenue stream to squeeze dry. Investing into Apple-only technologies is getting yourself into an abusive relationship. macOS is still a good platform, but staying away from Swift gives you an escape plan.

There's also no point having a native UI on macOS any more. Apple ruined it themselves by switching to flat design, and making their own UIs and apps an uncanny valley between macOS and iPadOS. There's no distinct native look-and-feel on macOS any more.