Let's make sure social security is around forever, and available for those that actually need it. We can slightly increase taxes and slightly reduce benefits for wealthy people to keep social security working basically forever. I'm fortunate to be a highly compensated engineer. If I'm making say $250k a year, I could pay a little bit more in taxes to help the system be sustainable, and also more likely to be there if I do need it.
Taxes for this benefit are capped at $8,240 or 6.2% of salary up to $132,900 [1]. The reason taxes are capped is because benefits are capped. My company could pay a bit more in payroll taxes and they wouldn't care, they'd love to hire 5 more experienced and well compensated engineers like me. There's a similar issue on social security wages - let's say I accumulate $5 million in assets at retirement, I'm going to be earning a pretty good amount of income even when not working, so you could reduce my social security (maybe via extra taxes?). People grumble about that money, "it's mine, I paid for it my whole career" - and you did pay for it in taxes. But things like social security also serve as a crucial part of our weaker societal safety net in America. I want it to be there for people that need it.
I probably won't need it in retirement, but most people will. If I do lose all my money, or say I wasn't as lucky in my life and was hurt or not able to accumulate so much wealth, I want it to be there - for me and others.
[1] https://smartasset.com/retirement/social-security-tax-limit