I'm not treating global warming as a joke. I'm treating the environmental impact of javascript-driven webpages as not worth taking seriously.
If you want to take it seriously, I recommend quantifying the impact as a first step. If your calculations show it's worth taking seriously, I'll happily change my mind.
"lessen the difference in the overall evaluations of the two options" is not enough. "This is a serious factor that I care about and you should care about it too, but if it was completely reversed, that wouldn't actually change the outcome": I'm not buying it.
If you want to take it seriously, I recommend quantifying the impact as a first step. If your calculations show it's worth taking seriously, I'll happily change my mind.
"lessen the difference in the overall evaluations of the two options" is not enough. "This is a serious factor that I care about and you should care about it too, but if it was completely reversed, that wouldn't actually change the outcome": I'm not buying it.