AFAIK, the source maps are only actually requested/downloaded when the user opens the dev tools. There’s no reason to have them automatically download for every visitor. The enable/disable simply toggles whether or not the request is accepted when the user opens the dev tools.

So if my understanding is correct, keeping it enabled wouldn’t really impact server load, unless lots of users are constantly using the dev tools.

Even worse, one of those two votes is often enough to kill the entire thing, because they have unilateral “it has to be unanimous” or “this one specific country can overrule everyone else” rules on the important shit.