Well, I'm a programmer and I work with UX and UI folks all the time. One thing I can tell you from my 30+ years in software dev is, you can never please everybody, and if you wait a couple years between cycles, tastes swing like a pendulum, light to dark, dark to light, colorful to muted, etc.
Personally, I too like the new dark theme very much, and popped in to say as much, so thanks for the opportunity. Being a Cake user since the DOS days, I can say with confidence that it only gets better and better and I am thankful for all these amazing years working with this outstanding software. Do I have a list of gripes? You betcha, but that's life. My car isn't as awesome as I would like it to be, and I could use another ****-ton of guitars, but... I still love what I've got :)
Lum