A Token for Fiat Currency like Tether

Hello there,

I was doing some research for tokenizing a fiat currency (not USD). And I’ve come across POA. With a very fast real-world TX time.

Whoever, I still don’t understand the difference between GAS for ETH and POA for its network. Supposedly, I create a USDT. Is it possible that user that transfer USDT to another USDT on POA Network will pay for their own TX fee without owning a POA?

Thank you.