I do not personally use theming to really any extent, but I know many who do, and it’s wonderful to see work being done to make the easily accessible through things like accent colors
This may just be me but although I spent a lot of time customizing my system on Linux (KDE, window managers etc.) I never really cared about accent colors.
For me they are in a weird grey zone were they don't really change enough to be worth it but it's fairly easy to make the experience worse by choosing a bad one.