I have their Walmart Plus. If I'm buying a major brand item I go to Walmart. 0 chance of knockoffs. I get 2 day free shipping. And - if it's in stock locally, many times they deliver directly from the store and I get it next day (no option to tip...so no pressure there).
I use their store delivery option if I'm buying certain groceries or items I need ASAP. Yeah I need to tip - but I consider it me saving gas money/time.
Walmart sources their instore shopping to door dash employees. Doordash delivers their product whether you use the Walmart.com, or Walmart Groceries (in store).
The only difference is that it's more explicit it comes from doordash when you use Walmart Groceries.
I use their store delivery option if I'm buying certain groceries or items I need ASAP. Yeah I need to tip - but I consider it me saving gas money/time.