A lot more.
People have a right to free expression, but there have to be limits and standards. I don't know if this guy is in the middle of a standard suburban neighborhood or has a place down by the creek that no one can really see. But suppose it's the former.
Imagine you're a working class family. You and your wife finally saved enough to own a home in a nice neighborhood. You're mowing your lawn. Your kids are going to the local school. You have some nice plantings, and a patio in the back yard. You're finally where you wanted to be.
Then, some narcissistic numbskull next door decides he wants to plant half his yard in sunflowers. Because he "really digs sunflowers." Who could possibly want to interfere with such a sweet, freedom-expressing idea. Why, goodness! He's planting the flowers to make the neighbors who like them smile! And the neighbors that don't like them can, to put it sweetly and with empathy, go to hell. Such a "nice guy!!"
Another house near sunflower guy has been listed for a few months. The realtor shows the house, but sunflower guy is always outside tending his sunflowers and flashing a peace sign at the prospective buyers. They move on to the next house in another neighborhood.
You check Zillow, and, a year after buying your own house, its value has gone significantly down. But at least you can look at sunflowers in season. And get a peace sign flashed at you.
Moral of the story. It's nice to conform tastefully to the style of your neighborhood and not nice not to. Your neighbors have a lot invested in their properties. It's their home and their future equity. It's uncool to think you can just express your free spirit at their expense. Whether it's sunflowers or "Trump rules" signs, it's uncool.
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