Doesn't doordash make you tip before you even get your food? I noticed a long time ago it didn't matter what I tipped for delivery ahead of time, or at the regi

Doesn't doordash make you tip before you even get your food? I noticed a long time ago it didn't matter what I tipped for delivery ahead of time, or at the register, the service I received was exactly the same. Begruding and slow. I'm done tipping anywhere but restaurants, where it's after I get my meal and service.