I’ve used SD light since Day 1 of Discourse. Right now I’m on Discourse - classic since SD light has been broken recently. Though apparently fixed earlier today.
You might well be right. Tbe different themes show and hide very different subsets of the totality of info Discourse puts out.
I’d like to see a “show me absolutely everything” theme just so I know what’s available to show/hide.
Humans don’t tend to miss what they never knew existed.