Social Security fund invested in government bonds, so the interest from that goes into the fund.
To be fair the budget deficit was there before Trump. His campaign promises are going to increase it, but they can offset that partially with spending cuts. Also, the government has been using money from the Social Security fund routinely, again nothing new under Trump. They just count it as an internal debt. According to Wikipedia, by 2022 it’s been already about 20% of the fund “borrowed” by the government.
Well, luxury and rich are closely related terms, aren’t they? I think what you described is a financial independence.
I’d add that if you can support your desired level of luxurity for yourself and your family without working anymore - that’s being rich.
Edit: I misread the original question, which was asking about wealthy, not rich. Still, I think my answer applies