Subjective, just look at how christianity changed the western countries with it's fake values, then look at thailand, china and other eastern countries
Morality is subjective, though there are common strains that would probably be considered obviously objective. Things like treat others with kindness are pretty universal with people's morals, but morality encompasses such a vast array of problems and consequences that there's no way to draw clear cut lines on what is "good" or "bad" or even just iffy. The roots of morality that are based in care towards living things and compassion are solid, but there's so many topics that are like leaves swaying in the wind. You can't really pin it down.