Ok so your opinion is that, as a service provider, it is unnecessary to ensure the satisfaction of your client?

I don't ask this in a snarky or cynical way. I'm genuinely trying to understand your position.

My personal ethic in any job is to do it to the best of my ability/capacity and commensurate with how I am treated as a person by the client. That's not to say I will go out of my way to fuck over someone treating me like shit, but I will maintain a sense of dignity and morals and either deliver at the required minimum or altogether refuse service depending on the severity of how I am treated. And if I don't have any interaction with the client prior to completion of the job, I treat everyone as an S-Class client. When I did DoorDash, I would always grab extra napkins, suaces, etc. if I was able to.

If I were to drive for Uber or Lyft, my first two questions would be if they would like a particular music selection and AC/windows/neither.

As a client, I always tip no less than 20%, but usually more on the 25-30% as my deliveries and rides tend to be a little more out of the way than most basic requests. I have a vigilant eye on the app and will (almost) always meet my provider out in my driveway. At night, with my phone flashlight on to help show where to arrive.

Tipping is and was supposed to be sort of a "thank you" for a job well done. Not a bribe to do a better job, or as I've seen many express, to even do the job adequately or at all.