The rich people moan because they have to pay more tax than the poor people who they feel they are subsidising. They, of course, are the ones that employ the poor people but don't pay them enough to live on so the government has to step in with benefits so that they can afford to live. So really the government is subsidising their business to have cheap employees.
The poor people moan about immigrants because certain uber rich people have done a very good job of convincing them that the immigrants are the ones making them poor, rather than the rich people who are benefiting from their hard work without paying them a decent wage.
Those in the middle moan because they used to live a very comfortable life 10 - 15 years ago but now everything has got so expensive that even though they are not poor, they are having to watch the pennies and they feel entitled not to have to worry about money because they "worked hard" and got "good jobs". Obviously (not at all) people like care workers on minimum wage are only poor because they are lazy and don't work hard and they get benefit top ups which just isn't fair on the wealthier people who have to pay more tax.
Meanwhile, the uber rich are laughing all the way to the bank (tax haven on advice from expensive accountants) while the rest of us plebs fight it out amongst ourselves.
Elon Musk $413.2 billion
Vladimir Putin $70 billion
Donald Trump $7 billion
Rishi Sunak $800 million
James Dyson £21 billion
It is worth watching the video to see the scale and think about Elon's wealth and why he weilds so much power.
https://youtube.com/shorts/fV-csopXZPs?si=XsE16LNZrNXQHyFJ