https://nypost.com/2023/05/15/self-checkout-machines-now-ask-customers-to-tip/
When I worked in retail we were forbidden to take tips.
I am slowly ceasing to tip, because my assumption is that like every other cost tipping is already baked into the price like every other cost a for-profit incurs on top of the already over-inflated markup, while CEOs, executives, and shareholders via management pay labor the legally allowable minimum.