"I am kind of curious why SM implemented weight mapping on Poser"

Because, since I got on board with Poser 5, a small but vocal and growing group have loadly begged for weight mapping (and scatter).

"Nowadays, a few folks are still doing that,"

I know of almost 100, and the number is growing. If one is not among them, one does not want to be.

lmk

 

 

Probably edited for spelling, grammer, punctuation, or typos.