Personally i just find high PPI content easier to read. Currently i’m running 2 x 24" 1920 x 1200 displays at the studio. I imagine you have a large 4k display, if you’re comfortable with 1:1 scaling. My laptop, however, has a 15" 4K screen, and Cubase (the parts that are actually HiDPI) looks amazing!
The only showstopping thing preventing me for grabbing new 4k displays for the studio is the inability of Cubase to scale up HiDPI-unaware plugins. Ableton Live does this, same goes for Studio One. I’m not asking for magic - just a simple checkbox in the plugin-manager (like Ableton btw) that scales up plugins 2:1.
Lots of plugins are built on the JUCE framework, which finally seems to have HiDPI on Windows under control. However - Native Instruments seems stuck, in regards to their back catalog of plugins, and so does a lot of other smaller plugins developers. UAD also comes to mind … (at least on Win; not sure about OSX).
I bet the real issue stems from Steinberg using Qt as the interface-framework, which pretty much puts it out of their control, unless they fork the code. Ableton as well as Studio One seems to have a custom windowing system already!
In any case - making HiDPI a selling point of a product, then not delivering a usable implementation (when everybody else is able to do so), is just not … well … not ok!