It's probably possible to build a quality 5-over-1, but I haven't seen it. Poor-quality insulation, cheap sheathing and poor sound insulation inevitably leads to fast depreciation.
Still, if 5-over-1s were banned, you'd just see the next cheapest option built to similar standards. The issue is quality control, not the architecture itself.
Yeah, I'd ban them by making quality standards high enough to eliminate them. Politically connected contractors working through YIMBYs will never let that happen.
