I already knew that. I think most people know, it's just...

"BTC network is not so polluting if compared to wastes and other energy consumptions (like conditioned air)."

If your neighbor had access to government-issued electricity, but he opted to not use it, and use a more expensive power generator that wastes a lot of gas. He'll have more energy for fractions of the cost if he just used the electricity the government gave him, but he hates the government just that much.

Now imagine if that same generator's noise reached your house and sometimes it gets you uncomfortable. You can live with that, but it just feels so unnecessary because you know how many resources it wastes and you think the government-issued electricity is totally fine.

See?

That's how Bitcoin feels to the people who don't see the value of it over Fiat, the cost-to-benefit proposition isn't logical to them at all.