The lump sum is down due to interest rates. However, as an example if you have a 1M lump sum, and you invest it wisely or even in low risk areas due to interest rates (dividend paying ETFs, CD Ladders, even money market funds), it would grow over time. I mean there are high interest savings accounts now that are paying 4%+ - that would be 40,000 a year and compounding. Of course, those rates will not last forever. It just depends on your aversion to risk.
That being said. The annuity may make sense if you don't worry about leaving money to your family, or have 401K, emergency savings, and/or can adjust your lifestyle/spending to be covered by the annuity(including potential health care costs in retirement) But, there are no inflation or cost of living adjustments. So, whatever you get per month is what you will always get. That may not matter over 10 years, but 25 years from now will it be enough with Social Security and other savings?