The raw statistics already tell a story that the difference between "BTC" and "Facebook" is greatly exponential. Wanting to focus first on the (much) bigger exponent isn't necessarily a sign that people's real motivation is "conspiratorial" against crypto.
It is orthogonal to the issue at hand that PoW is using far too much energy per transaction/per capita/per GDP/per most metrics you want to point to. Not using the energy in the first place is always going to be greener, no matter how much PoW systems invest in renewables and their R&D! I can't see that as "misguided". An outright ban would get immediate results versus a carbon output tax would incentivize eventual results, maybe. That's not misguided, that's just a different perspective, and a different preference on an ideal time window to address the situation versus wishful thinking and "golly gee, sure hope the market eventually figures it out someday".
People seem to be intentionally conflating some things. A carbon tax is nice precisely because it avoids getting into weeds and is a general approach that applies equally to everything. Some people are proposing this and others are saying "don't get caught up in the weeds." What? Makes no sense. It just reinforces the poster's point: that some people's real motivation doesn't seem to be environmental, there's a strange focus on crypto specifically that makes it seem like they want it to be reigned in for other reasons.