I have a huge problem with your use of "moralism" as a term. For me it appears to be used pejoratively as an act to weaken the concept of morals at large. (Which isn't your invention but something you probably picked up.)

We made a machine that is driven by emotions and rewards short and exaggerated interactions. On the surface it's black and white, but in each such situations there is also nuanced discussions and people that reflect things. I often also carry such moral debates to friends, I assume others do as well. There is at least a portion of nuance. Saying it's always black and white, is black and white thinking itself.

What I would agree with is that groupthink is a problem. People choose sides depending on who or which group said it. Also virtue signalling, as it's often just (unconscious) reputation management and hinders progress.