Better yet, no time zones. Just one clock for the planet.
Also, don't call people out of the blue and expect them to pick up anyway. Maybe your uncle had to work late and is sleeping even though the sun is technically out.
I know, it's the weirdest thing calling folks. People pretending like calling others with a phone is the purpose of them. Jeez, the audacity. Not following social rules of using a phone. People need to construct some socially agreed concepts to help cooperate with each other.
So no, my take on the argument was appropriate. Their stance was an absurd concept based in teenage destroy-the-system angst rather than taking reality as it is. If there's a truly better way of making sure two parties show up at the same "when", then let's hear it.