No, they aren't. If I don't like what I see, I won't buy it. There's a difference between, for example, buying a tin of baked beans and buying an avocado. You don't need to assess the ripeness, or otherwise, of a tin of baked beans of a bottle of shower soap, but I did say "fruit and veg". If, at any particular point, I don't like the available fruit or veg, I buy something else or don't buy at all.
But, for the record, I buy a lot of fruit and veg from a market, and most of my meat from a local farm. Have I tried Ocado? No. If I was to use this type of service, that's my first point of call, but I haven't and have no plans to.