Am I alone in thinking this is cool but not inherently useful? The only use case where this might be useful is in video calls to make ‘eye contact’ more realist

Am I alone in thinking this is cool but not inherently useful? The only use case where this might be useful is in video calls to make ‘eye contact’ more realistic but I’m sure there are software fixes (altering pupils) In most cases such as the windscreen you can just have a camera on the frame. Why does it need to utilise the glass itself?