This is true across all income classes, because the classes are a distribution. While I agree that those in "precarious" positions may be concentrated in the gig economy for the reasons you suggested, this argument is an insufficient rebuttal.
> The pay on DoorDash is very low, because consumers won't pay that much for food delivery.
OK, so costs go up, consumers don't participate in the market, and the gig economy collapses. Are we in a better or worse position now?
> Here's a thread on the DoorDash Reddit
Do these individuals think the picture would be more rosey if they didn't even have this work for income?