My apologies. I misread your post as saying “there’s no mekor in the Torah for poskim…” rather than “or poskim.”
This is why my response was about yidden poskening for themselves rather than consulting a posek. It was a post totally based on a misreading, so I retract that.
As to your actual point: if there were no rayes in the Torah to differentiate between the color red and the color green, would you have a problem with doing so? MO people are clearly different than Chareidim; there’s no point is pretending otherwise. They claim they’re better, we claim they’re worse. We live out our eternal struggle on the YWN CR. That’s how the world works.