Today, you have to consider where a person is to schedule a meeting. Nothing is changing here. You’re just arguing to argue.
If I say, “are you free at 13:00?” No one has to say “well, is that 13:00 your time?” It’s just clear
We ALREADY have this system. We just reference the UTC when talking about time.
Obviously it takes some getting used to and that makes you uncomfortable, but it’s no more difficult switching than switching from a 12 hour clock to a 24 hour clock.