I thought I was expecting a lot that this might trigger a discussion on the nature of beauty.

You voluntarily posted a picture of a woman (presumably without asking permission), and opened “discussion” by using “shame about the body art”.

I ought to have realised that forums such as Lemmy World are not appropriate venues for intellectual discourse.

No, you ought to have considered tone and word choice, if what you wanted was intellectual discourse.

What you’ve done instead, is draw attention to your tendency to neg.