You make wrong assumptions in your generalization of progressives. Using my own life, for example, I am sole supporter of my wife and four kids. I am a caregiver to my elderly father and an elderly aunt. I coach youth b-ball w/my kids. These are all obligations which I freely give of myself, but there are certainly times when I would rather be doing something else. My commitment to these obligations I believe meets the definition of sacrifice, loving God and neighbor as myself, etc., essentially putting my faith into action rather than holding fast to a rigid ideology and making a religion out of that (i.e. trad C'ism). I don't know any progressives who don't think sacrifice is important, placed within its proper context. I would suggest a study into the type of sacrifice Jesus ruled out in favor of mercy, that might help clarify your understanding of that passage.

Conversely, I think your representation of scrupulous is spot on. There again, what did Jesus say about this approach?