https://i.imgur.com/5CNUm9l.png
I regenerated that response several times, and every single time it was something along these lines. I also tried it with the original prompt in that screenshot used verbatim with similar results.
Looking at other posts on the Twitter account in question, I have my doubts that the experiment was conducted in good faith, as opposed to retrying until they got the exact response that they wanted.
Going beyond sources to conclusions, given LLMs aren't search engines and do synthesise results:
Politically, low-tax advocates see it as "fair" for people to take home as much as possible of what they earn, high-tax advocates see it as "fair" for broad shoulders to carry the most and also for them to contribute the most back to the societies that enabled them to succeed.
Is the current status of Americans whose ancestors were literally slaves made "fair" by the fact that slavery has ended and all humans are equal in law? Or are there still systematic injustices, created in that era, whose echos today still make things unfair?
Who has the most to blame for climate change, the nations with the largest integrated historical emissions even where most of the people who did the emitting have died of old age, or the largest emitters today?
And so on.
In other words, while sure, some "well behaved" is "passing on our biases", there does (IMO) seem to be a big chunk that's "universally well behaved".
It's hard to get people to understand the disproportionate effort fixated people put into anything: it's a problem in real life, but they get reacted to. If their fixation becomes some weird message on the internet, nothing happens to them but people have trouble believing the scope of time and effort they'll put into evading bans, blocks, and chasing down people across forums.