I'm not living in the US. As far as I know, it's something very ridiculous that every house needs to look absolutely the same (I feel the freedom). And no, what I wrote isn't "the same", mandating how every garden needs to look exactly the same is something entirely different to fighting against very specific "garden" styles that combat the environment and are bad for the infrastructure (see floods). I'm fine with people having their garden however they want and doing stuff, but it needs to be in certain boundaries, e.g. that you aren't allowed to seal all ground which is terrible for bees, the environment in its wholeness and dangerous during floods.
If there are some rare edge cases where many things depend on it and there are very good reasons to set a certain boundary but otherwise leave the freedom to do the own garden and house how they want, that's something different to just mandating that there is no possibility to choose anything about it's looks and destroy all creativity and uniqueness.
Mnmalst