Comment by doutunlined

Your comment implies juniors are only juniors for a temporary amount of time. I've worked with many SWEs (some with years of FAANG experience) who consistently code like juniors. They are aware of things like the separation of concerns, but as soon as they run into a situation wheres its easier for them to leak one layer's concern into another they will do so. Consistently doing this over months erodes the quality of a codebase.