I use DT almost exclusively for my photo editing since over a decade. While it is absolutely true that you can do professional work with this you have a very s

I use DT almost exclusively for my photo editing since over a decade. While it is absolutely true that you can do professional work with this you have a very steep learning curve, bad UX and feature overload. The latter is really a core reason for the bad UX: developers love to add features. Every feature you add becomes another module or another slider. Every slider or widget you add creates an extra dimension for the parameter vector an artist has to explore to get the result they want. Less is more. This is contraintuitive for developers. As a developer I would say it is because of the warm, wholesome feeling that adding another feature gives you when you do. :) Choosing what to leave out or how to combine stuff into fewer widgets is one of the hardest parts of software product development. And this is the missing piece in so much OSS software. Just for example, the Phase One (DT-like commercial app) HDR module (which just allows HDR compression of shadows & highlights) has two sliders that cover 95% of use cases. DT has seven sliders & one dropdown in it's Shadows & Highlights module. Yes, they probably cover the other 5% but a what price? That's why professional creative software still has an edge and that's why the prospect of being able to run macOS graphical software on Linux is very exciting to me.