Nah, the front end is just visible. And any errors that originate get surfaced in the front end. All you get to see as a use is "website said no".

It's only now, in the days of "vibe coding" that I would firmly put the sole blame on developers for bad application interfaces, because it's usually just one clueless person who is YOLOing code out into the wild. Everywhere else: hidden icebergs of complexity and you didn't know what led to the current state.