This is so backwards, it's hard to know where to begin... We already have this universal standardised time he's talking about called UTC. I can set a calendar

This is so backwards, it's hard to know where to begin... We already have this universal standardised time he's talking about called UTC. I can set a calendar invite to UTC, and everyone magically gets it in their time zone. Time zones are useful because they answer questions like: is it a reasonable time to call? Is it during lunchtime there? Is the office open? Without time zones, you'd need to mentally store information about each place's habitual times in your head instead.