Thanks. What do you think about this post? The author sounds knowledgable and I think it contradicts what you said to some degree (in that the experience and app support is not good even though Linux is installed on a machine with a high dpi display):
I don't know about Ubuntu, but my experience with Gnome on Arch Linux and Arch-derived distributions has been pretty good as far as high-DPI displays go. I've only had to make minor tweaks to a few configurations here and there depending on the application.
If you want to avoid tweaking, stick to native applications, and perhaps more importantly, go for a manufacturer with proper firmware support for high-DPI screens like System76 (Adder WS), Dell (XPS 13), or Lenovo (ThinkPad P1/P53/X1).
https://news.ycombinator.com/item?id=22958647