I feel your pain, and I've experienced some of these problems myself. In my opinion, many of these problems relate to a (poor) assumption that Responsive Design

I feel your pain, and I've experienced some of these problems myself. In my opinion, many of these problems relate to a (poor) assumption that Responsive Design = Mobile Design. So the train of thought is to fit the Old Design onto a Smaller Screen. Instead, they should be thinking about how they can re-design the UI/UX to compliment Mobile, and deliver a better Mobile Experience overall.