The analogy was clearly used to make a point about feedback not being required to come with suggestions attached, not because they wanted to call the developer

The analogy was clearly used to make a point about feedback not being required to come with suggestions attached, not because they wanted to call the developer a dog kicker. If you really couldn't tell that, as opposed to you're just trolling, you could take a look at https://en.wikipedia.org/wiki/Metaphor https://en.wikipedia.org/wiki/Metaphor to learn more about this conversational tool.