You raise an important issue David. Here are some thoughts and info in response.

- According to the SSA (https://www.ssa.gov/oact/STATS/table4c6.html), 68.6% of American men and 80.5% of women make it to age 70. For age 62 the numbers are 80.4% and 88.6%, respectively. So, clearly, a large majority would claim full benefits even if those were delayed to age 70.

- As was done before, I'd expect that they'd raise the "full retirement age" or FRA, and keep the early retirement age at 62. That means that with the continued increase in life expectancy, a larger fraction of the population could get Social Security benefits if they claim earlier than FRA.

- Also as was done before, they'd probably raise the FRA by one month each year, so it would take 36 years to go from FRA of 67 to 70. This means that someone who's younger than 34 when they start would see the full impact, while those who are older wouldn't see quite as long a delay for their FRA. It also means that FRA of 70 wouldn't likely be reached before 2060.

- Finally, life expeectancy is expected to grow by as much as 12 years by 2040 (https://fortune.com/well/2023/06/20/how-employers-can-increase-us-life-span-health-span-partner-public-health/). If it grows another 12 years in the following two decades, by 2060 we might see the average life expectancy at age 22 (when most enter the workforce) to be 99 for men and 104 for women, so plenty of time to collect benefits.