I hope I didn’t offend anyone with the earlier post. No intent to do so.
Thanks for noting $primary, $secondary. As a programmer I understand the importance of such but as one who has not created a theme yet, still don’t know the details but will keep this in mind.
I installed discourse-theme-switcher yesterday on our site and while I like it and some of our users like it I am not convinced to leave it installed and currently seeking facts on deciding whether to uninstall it and try Hamburger Theme Selector. Your post has given me a valuable fact. Thanks. 