Not getting too deep into the interactions between contact point problems, I'm pretty clear that for me, butt pain can take me out of a ride and keep me from getting back on! Handlebars really can't do that, and I find foot discomforts are usually addressed by a saddle adjustment and don't cause butt pain anyway. If my shoelaces are too tight I'll stop for an adjustment, but they can't cause anything as intense as perineal abrasion.