admin it's very hard to get a theme that is going to please everyone. For some time, one been toying with the idea of completely removing the light mode from my forum as an the development work is (in the words of Star Wars 🤭) on the dark side.
My personal preference leans towards dark themes. As a developer who spends a lot of time looking at and writing code, I'd much rather not have my eyes burned out by a bright white background. The real problem here is that not everyone is into dark themes....
A tough choice, and often best answered by "give them the choice of both" but then you have to maintain two sets of themes and accompanying CSS.