As such, I wrote down my thoughts on this. I don't know if this corresponds to some subset of philosophical thought
just as you called it: 'moral relativism'or moral/ethical relativism. It gets mucky to not chop up morality debate into finer pieces; utilitarian, consequential, etc.
I've no formal learning in philosophy, myself. I prefer philosphical fiction than strictly philosophical papers (for the most part). how is that Coursera course? Is it an intro to philosophy?
From your post and replies I think you are mostly concerned with being/ontology and existential views, correct? Maybe even moral nihilism?
RE: Morality: Only Subjective Or Objective?