I noticed on my one Instcart order (from Wegman's) the substitutions were stupid.
New York City luckily has a thriving trade-purveyor business right now. From cheese, to fish mongers, to farmer's market, to fine produce/pantry providers; nothing wrong with getting a fresh picked bunch of ramps, baby leeks, spring onions, baby turnips, in an order.
D'artagnan has always delivered, and seem to be doing a good job of keeping up. It's the smaller operators who were really overwhelmed, as they are probably like 2-3 person operations.
Union Square Hospitality published a list of purveyors they deal with, whose businesses have morphed into home delivery or pick up.