In reply to Justin.

Thanks, Justin. That's fair enough.

My broader, initial point in this thread was that the Customizer isn’t "necessarily a plus" at all. To be "a plus," it would have to be better than the alternatives. To be "necessarily" a plus would suggest clear agreement or evidence to that effect.

You are, of course, aware that there are developers with sales of themes much greater than yours, who say precisely the same about their Theme Options pages as you do about the Customizer.

That doesn't make them any more right than you. It does, however, mean that assertions that the Customizer is "necessarily a plus" need to be challenged. If assumptions aren't challenged, then things don't improve.