Dear Dogtor, imho:
Biography is "an account of someone's life written by someone else."
and some or maybe most of contributors (subbers) here is prefer to be anonymous.
But I'll agree with you if subscene is need to be more attractive (don't know how) but still simple as now.

peace

Biography that is not mandatory. Someone might like to write their other specialties, or say what character or move/series they are interested in, or write a concept sentence.
This feature can be useful for everyone.
It has no effect on whether a person is secretive or not, just to describe themselves voluntarily.