I’m more alarmed that we needed a study to show this.
Actually, maybe not. The US has expeirmented for decades with gun laws looser than driving test requirements, but cannot correlate this with deaths. They continue to run the trickle down economy experiment with only negative results. No indication of change other than pockets like NY.

Turns out, tips are payed by the customers, not the manager. Did everyone already know this?

Uhh that’s how tariffs work?