It doesn't work for headless chrome, sure. The thing is that often, for threats like this to work they need lots scale, and they need it cheaply because the actors are just throwing a wide net and hoping to catch it. Headless chrome doesn't scale cheaply so by forcing script kiddies to use it you're pricing them out of their own game. For now.

Doesn't have to be black or white. You can have a much easier challenge for regular visitors if you block the only (and giant) party that has implemented a solver so far. We can work on both fronts at once...