It means my money (in Bitcoin) can be accepted anywhere that can receive data, and preserved without information loss over time. Gold cannot be transmitted over space as information, fiat does not preserve its share of value over time because of inflation/debasement.
I can leave my country tomorrow with my wealth stored as a 12 word phrase in my head and exchange it into local currency in practically any country in the world. That among many other incredible properties give Bitcoin significant advantages over any other money. You can programmatically transfer real wealth - not credit - with Bitcoin. Look the Lightning Network to see how money can be streamed each second, with finality. There are many reasons Bitcoin as a base layer, instead of fiat, will reward its network participants.