Is there an inherent disconnect in being anti-tipping and pro-pay-what-you-will? How is a restaurant letting you pick your own price for service with the expect

Is there an inherent disconnect in being anti-tipping and pro-pay-what-you-will? How is a restaurant letting you pick your own price for service with the expectation that you will be fair different from a humble bundle letting you pick your own price with the expectation that you will be fair? I'm not trying to be difficult or argumentative, I'm genuinely wondering. I'm pretty anti-tipping and pro-pay-what-you-will myself, and I'm just wondering if I'm fooling myself now.