I.. I got the link from about halfway through your blog post, I wanted to be fully informed before replying, so I read through your source links.
In any case, I'm not saying that it's not technically effective, only that what Door dash did feels pretty skeezy on the surface.
I guess that's one of the problems with working for corporations, if the job is done well, it squeezes money out of customers better. I don't have a better alternative.