A well-made UX in GTK or QT can look fairly native on Mac with little-to-no effort, and would let you also distribute it to Windows/Linux/Chromebook (the other 93% of the PC market, for those of you who aren't paying attention)

I love Mac apps, I like their silly use of euphemism and laissez-faire design language, but I will outright not integrate it into my lifestyle if I can't run it on my 5 other devices too. Getting work done comes first, and I'm sure as hell not going to boot up my QEMU container just to add a bullet point for my shopping list.