Obviously I cannot speak to the story in the tweet actually happening, but I’m not so certain that this couldn’t happen for two reasons:

1. People who spend money on a cute, innocent kid’s lemonade stand are probably not stingy. After all, you’re never really getting your money’s worth there and it’s more about the (arguably) good deed.
2. Once the kid (re)acts in a way that makes it seem it is convinced the money is its, it’ll feel like stealing from a kid to ask for the change back.

And also because Animate Dead, the spell the blurb in the meme is from, reads:

Choose a pile of bones or a corpse of a Medium or Small humanoid within range. Your spell imbues the target with a foul mimicry of life, raising it as an undead creature. The target becomes a skeleton if you chose bones or a zombie if you chose a corpse (the DM has the creature’s game statistics).

On the second part. That is only half true. Yes, there are LLMs out there that search the internet and summarize and reference some websites they find.

However, it is not rare that they add their own “info” to it, even though it’s not in the given source at all. If you use it to get sources and then read those instead, sure. But the output of the LLM itself should still be taken with a HUGE grain of salt and not be relied on at all if it’s critical, even if it puts a nice citation.

In addition to what other people already said, without looking at the actual percentages, this could also just be random fluctuation.
Mostly Positive is 70-79%, Mixed is 40-69%. If a game teeters around the 70% mark, it can easily cross the threshold separating the two due to pure chance, in either direction.

Exactly, only twice as common. To put in other words: For every two times someone says “free as a bird”, one person says “happy as a clam”.

That is much narrower than the gap between something commonly said and something rarely said.

I can believe it insofar as they might not have explicitly programmed it to do that. I’d imagine they put in something like “Make sure your output aligns with Elon Musk’s opinions.”, “Elon Musk is always objectively correct.”, etc. From there, this would be emergent, but quite predictable behavior.