'Being paid to be nice to each other' encourages not only a very 'healthy' social environment but one that potentially can be 'healing' as well.
Recall the feeling when you pay someone a simple compliment. They smile. You smile. YOU have changed a person/situation possibly much more than you know. And YOUR Spirit has lifted a notch or too as well. 🙏
Absolutely. While I don't believe in karma in a spiritual sense, I think the wider knock-on benefits of any individual being "nice" are ostensibly positive. And as you suggest, for the individual themselves too. It's nice to be nice!