This actually is a great example of jury nullification. From https://fija.org/library-and-resources/library/jury-nullification-faq/what-is-jury-nullification.html talking about a different case:

Of 27 potential jurors questioned during voir dire, only five said they would vote to convict a person of possession of such a small amount of marijuana. Skeptical that it would even be possible to seat a jury, the judge in the case called a recess during which time the lawyers worked out a deal known as an “Alford plea” in which the defendant didn’t admit guilt.

When these kinds of rejections of enforcement of laws stack up over time, the laws become unenforceable. We’ve seen this rejection of the Fugitive Slave Laws and alcohol prohibition, for example, undermine such laws’ enforcement. Eventually, it is no longer worth the time or hassle or embarrassment for government officials to try to enforce these laws. They may be further nullified in a sense either remaining on the books but not being enforced or being repealed altogether.

So when these potential jurors said they wouldn’t fine someone for feeding the homeless, it’s one brick in the wall. Get enough bricks and all of a sudden the law is unenforceable.