Those same people are probably mad "desktop publishing" took the livelihoods of people who drew things by hand, used multi-media plus used exactoes and paste to bring designs to life.

2) Some automated processes lower the quality of outcomes. Microwaving food might be a faster/cheaper way to cook, but customers might criticize the results.

3) Some processes can be viewed as having lower value compared to others, independent of result quality. This is particularly common in the art and service industries, for which the logo of a restaurant is very much at the intersection.

https://en.wikipedia.org/wiki/Horn_effect

The reviewer is essentially saying: “If they cut corners on X, they must cut corners on Y”, which is a common logical error in making judgments based on incomplete information.

For a restaurant, a slop logo gives the impression that the owner doesn't care about the details and has no taste.

Beyond that, the use of generative models is a big moral issue for a growing number of people.

    What is it that makes this different?

Nobody likes picturing a world without art, and if nobody gets paid to make art... where does the art come from?

Nobody likes thinking where this trend goes. If we automate all the jobs away... everyone will starve.