I'm certainly glad none of the 100+ deer I've killed to date had those "pesky" ribs covering the vitals. No Sir, all the deer I have killed had the ribs on the back half so they didn't get in the way of my bullet or arrow.

I've seen some silly things on forums but I've never before heard someone say to "adjust" your point of aim to avoid the ribs. If your broadhead can't cut through a rib then it isn't worth having. Maybe the OP isn't aware that the ribs are covered with meat and hair. You really can't see them on a living deer. At least, I never have but then I'm a whole lot older than he is.