Giants are jerks because they are bigger and stronger than most things and thus feel no desire to be cordial to things they believe cannot hurt them. Having a society built around physical strength makes sense.
Except in the lore, this... didn't work.
Giant lost everything pretending being big and strong and being bullies was enough. They used to be an empire. They used to rule the world. now they are the losers and everyone kills them for fun and profit. One might argue that Hill Giants, with their dumb Invader Zim style reverence to the Fattest (haha fat jokes!) might be okay with this, but other giant should be smarter than this by now.
This is what weirds me out about halflings outside of 3e and 4e. They don't act like small magicless people. And many DM run them as clowns or as bores. And many editions and D&D adjacent games make them every weaker with silly illustration.
Okay, so this is a group issue. I don't think playing halflings as joke is really prevalent in the large zeitgeist. D&D tends to make them darker and edgier; Dark Sun cannibals, BoVD nebulous evils, Dragonlance kleptomaniacs and then sad boring kleptomaniacs... I guess the movies gave them all a weed habit, but that makes them more relatable based on current legislative trends, not less.
5e's illustrations are an abomination unto the Lord however. I agree. Ironically, the argument for that style was, of course, the ruiner of all things good and fantasy--realism. The idea was that those fetus monsters have 'realistic' proportions for their size. Taste the verisimilitude, I guess.
So I don't know if a portion of the community even like halflings, doesn't care what happens to them, but includes them just for tradition.
A portion community also hates strange races, traditional races, magic items, magic, dungeons, dragons, and combat, so I wouldn't put much thought into that.