>Basically all uses of const in JavaScript are pointless. I have asked many times for someone to show me an example of a bug that shipped that would have been prevented by const as it exists in JS. I'm still waiting.

You have it backward; there's almost never a need to use let in JavaScript, as most variables should never be reassigned.

I've seen bugs pop up many times in client-side development where, for whatever reason, a variable is reassigned in a way that's difficult to predict. By defaulting to const unless reassignment is necessary, you're essentially putting documentation into the actual code and you can prevent logic errors by forcing runtime errors during development.