Are we overcorrecting for thumb reach in mobile UI design? I’ve been noticing a strong trend in mobile UX discussions around optimizing everything for “thumb zones,” especially pushing key interactions toward the bottom of the screen. It makes sense ergonomically, but I’m starting to wonder if we’re overcorrecting and sacrificing other principles in the process. For example, when everything important lives at the bottom, hierarchy can feel flattened. Navigation bars get overloaded, and content sometimes feels secondary to controls. On the flip side, placing elements higher up can introduce friction, but it can also create clearer visual structure and breathing room. I’m also curious how much this depends on context. Are we designing for quick, one-handed interactions on the go, or for more deliberate, two-handed use? The same layout might perform very differently depending on that assumption. Screen size, hand size, and even posture seem to complicate the “ideal” placement.…