That attitude doesn't leave a great impression for me. I take your points about how difficult it is, but I think we can all do better than throw our hands up in the air. For instance, you could talk about how easy containerization of CI/CD makes it easier to move your pipeline where impact is lowest. Or that you can control your own impact rather than leave it up to the whim of someone like CircleCI.
There's no silver bullet with environmental impact, which is why we all have to collectively apply whatever wins we can, wherever we can.