You know, life doesn't have to be an ideological death march. Let's focus on moral improvement instead of moral purity. Large scale incrementalism has wrought massive positive change for humanity. Whereas the large scale pursuit of purity brought about the disasters of the 20th century.
It’s difficult to see how asking somebody who is beating the climate change drum to toe their own line is sending them on an ideological death march. The hypocrisy displayed when these folks run around in their private jets while screaming about ice caps and carbon is a textbook example of the “fine for me but not for thee” attitude of the elites that many plebes find insufferable.
The issue is simpler than ideological purism at large scale. If you ask someone make sacrifices that the one asking isn't making, no one should be surprised when there is resistance to making the changes and the motivations of the one asking are called into question.