How is this the world's FIRST smart door?

used to sneak into my room at night, where the PC was, to play Doom. She needed to figure out the maze, she said. Was pretty good at it too.

Sure, but that's assuming the member who needs help a) knows they need help (and knows so soon enough), and b) has the initiative to seek help (soon enough). In my experience junior members can be reluctant to seek help and tend to spend some time trying to figure out a problem themselves. It's not uncommon for a senior member to notice a junior member has trouble with their task before they do, but the signals to notice that can be lost in a WFH scenario. The initiative to seek help is then reversed to the junior member who may not yet know they have a problem in the first place, or spend too much time trying to solve a problem before seeking help. This can be solved in many ways, and I don't think it's an argument against WFH, but may suggest that evaluating the performance of an inidividual by pretending they're working in isolation might not be the most accurate.

Since working remotely I've noticed I only do the work that is actually in my job description. What I don't do anymore at all is mentor, teach and help juniors.