I wouldn't be proud of building on an increasingly user and developer hostile platform, but thats just me.
> For us, the ultimate benefit of being a native macOS app is that it puts the choice in your hands.
That's... kind of a weird opinion but all the power to you. I have never felt like "choice" was a core value of Sketch, since it doesn't give me the choice to run on my hardware or software versions. But thanks for letting me own my own data.