First, it’s unlikely any sane politician would let the Social Security office run out of money. They’ll continue funding it for as long as they can print money.
Secondly, these are projections only and continue to be adjusted. The previous year’s projection was that by 2035 social security would run out of money but still be able to fund 80% of it’s obligations. They moved the projection forward one year, 2034, due to the pandemic related issues.
Finally, studying the report you can see some of their basic underlying assumptions, all of which are up for debate and change year by year. Such as, the fertility rate, 1.69. Important number to keep in mind since the replacement fertility rate is 2.1.
The health of the trust fund is something to watch and creates a lot of interesting political games.