Is using a grocery delivery service a greater risk vector than making a trip to the store in person? That's not obvious to me, certainly poor minorities can work at grocery stores too.
Is is it necessary true that grocery delivery service providers are poor minorities? At the risk of revisiting the Prop 22 debate, my downstairs neighbor is a college student who's happy to go out and do some deliveries as time allows.
It's not necessarily true but it is statistically true. Gig workers are more likely to be non-white and have lower educational attainment than traditional workers, and non-white gig workers are more likely to rely on gigs for primary income than white workers.
The delivery person could have a higher risk due to visiting all the households, but my experience is that they are all hands off. The gig worker drops the groceries at the door and leaves.
Concentrating harm in an already disadvantaged group in the name of the 'greater good' is ethically thorny though. It can be used to justify a lot of not-so-great things.
I'd be wary of coming to strong conclusions here without data; you can easily come up with plausible arguments either way.
I feel a lot of well-off people are not considering effects like these, which will likely be quite large, when they weigh the long term consequences of our disease response. And it's weird to me that even the most progressive people in my life are happy to use grocery delivery and similar services that essentially transfer disease risk from privileged groups to poor minorities. It's like people don't have the emotional bandwidth to be worried about the disease and inequality at the same time.