All you see as a Dasher is that there is a new delivery for a 'guaranteed minimum' of $10 which in this world means that you will almost never receive anything other than $10. You take the job, deliver the food, and find out after that $3 of that was tip. You take another $10 job and find out that $0 of that was tip.
In this world there is zero expectation of a tip because almost no one tips outside the app and in-app tips are worthless. The reason tipping is expected is because ...it's expected. You're an asshole at a restaurant if you don't tip because ~15% is the baseline, in DD's world the baseline is 0%.
I'm not exactly sure why you're trying to guilt yourself into paying more for the exact same service to a person that is not expecting anything extra. You're doing the equivalent of tipping the cashier at the grocery store.
https://i.redd.it/jrusids6bggy.png
> I'm not giving my tip dollers to a company that doesn't support working people
Oh! But PJ's screws that over by trying to call the employee an independent contractor. Oh yea, they try the same crap as Uber and Lyft and the other rideshare and delivery companies. In fact, they're practically the modern pioneers of the new 'independent contractor' scam. these 'tech companies' are just copying what the pizza industry has been doing for ages.
DoorDash being scammy doesn't give the customer permission to ignore a social norm. The customer should still tip, just do it in cash outside of the app. It is a little less convenient, but it is better to be inconvenienced than to be an asshole.