Paywalls take it back out of the realm of giving and receiving, into buying and selling. Two different economies.
Personally, I like the first one better.
Giving whatever I can gladly, without expecting anything in return, and letting what comes be a bonus. Using zaps to appreciate the excellence or humour I see.
I guess if creators want to make a living on zaps, they can try... On YouTube we kinda know people are out to make money from their channels, but here, we're just a bunch of people sharing life.
It's like restaurants. A tip isn't a tip anymore if it's demanded. It's become an expectation, and the percentage keeps going up.