It's actually not the tips that get the pressure. When you fold the bottom legs, it's the trailing edge. It's not a ton of pressure, but I wouldn't want to have the MP constantly squeezed (ie: pressure on the hind legs), otherwise I can see either the props deforming, or the MP undercarriage scratched up.
As to their being flexible, yes. They feel incredibly thin and flexible, and frankly feel like cheap crap compared to the old props. If they weren't noticeably less annoying and quieter, I would have thrown them out when I got them.
LP