The specific aesthetic that matters when you are working and trying to accomplish something are ergonomics. Is what I need where I need it and easily findable?
Below are concrete preferences of mine and likely many others which could lead to a DE prioritizing things other than appearance:
- Can I see at a glance my commands and tools, or are they hidden behind "beautiful" panels and other formerly skeuomorphic metaphors that got rubbed down into large blank areas of color?
- Do all my commands and tools fit on the screen and aren't separated by seas of overly minimalist whitespace or require clicks in weird, unobvious places or require weird mouse gestures that might be misinterpreted from my normal mouse movements?
- I want text labels because I'm literate and can understand words, not impressionistic random icons that look like hieroglyphics.
- When I click on something - is there some immediate feedback to give my brain a sense of interactivity? After all that is why I'm using a graphical toolkit and not a serial terminal. My RAM should go to what I'm using the computer for, which is applications, not the DE.
Footnote: Some who work in sales or marketing and use computers in front of others, such as paying clients, might actually need to "look pretty" while doing their tasks. Their DE requirements would be different.