The question was about how to choose who is using too much and how, and the response was basically "don't think about it, we will exist in the future and can think about it then." But we exist now. And even if we were to wait, it's still a question we can answer now to have enacted later. The response provided was a bypass, a non-answer.
Instead, they explained why these questions are (partially) misguided.
That's also an answer.
Because that is what always happens. Every time someone make s a general proposal, for any law at all, there are people making the same old, dumb argument, of "well who decides?!?" Every single time.
Sure you do not believe that all laws ever are wrong, right?
Because the answer to this dumb question is the same as for every law ever. That makes it valid, unless you believe that all laws ever are bad.
There are absolutely many laws, that are very targeted and specific. Were you unaware of this?
For a random example, there are laws that probably say something like "A truck, of this size, must follow these specific environmental regulations".
That would be a specific law, that applies to a truck, and required it to do a specific thing, like have a certain mileage efficiency, and it is not general. It is pretty specific, and it is not a general law that applies to all environmental related things.
The world is full of many specific laws, all over the place.