On the other hand, it is a failure of the government that people don't have any other choice but to consume what is available.
Don't blame powerless victims, blame the powerful who are responsible, but do nothing about the problem.
The people who drive huge cars can be blamed, but it's pointless because you'll never get people to voluntarily stop driving huge cars if they want to drive huge cars. You can, and should, blame the government for allowing manufacturers to sell huge cars and people to drive them, if the problem is so huge.
If there's a point to your comment, I did not get it.
You can assign collective blame, but what good is that, except for virtue signalling and guilt tripping? It's not an effective method of social change.
There is an organization (government) that can make those changes that you want (ban huge cars) - so why not blame them for not doing it?