Every time I open my FB I get hammered with dozens of random ads. Also, a randomly generated lists of posts from my network where things pop up, and are then completely lost in the aether, because that is how FB thinks it is going to increase engagement.
Facebook, and Instagram, is a frustrating, infuriating, alarming experience that really does not "bring joy" to my life.
Anyone dealing with "conservatives" IRL know that they come from a cesspool of dog whistles, religious fundamentalism, and invented victim complexes. Personally, I have had several ugly experiences with people like that in the dev community, usually by so-called Libertarians, who don't seem to have read anything outside high-school level Ayn Rand nonsense, and who've confused understanding Software with overall smartness.
Codes of conduct are useful because they give a community the tool set for preventing the warping that these people cause on their surroundings.