I don't think the average couple if both were 62 and earned a very modest income of 50K per year each would very well be able to retire without claiming Social Security at that age. Social Security per their calculator would provide 949 dollars per month at age 62 and $1,680 at age 70. For a couple the net income is 23K at age 62 or 40K at age 70.
In order to defer to age 70 the couple would need to have almost 182K plus enough additional savings to retire on. By deferring they will receive an additional 17K per year at age 70.
If it is 70K per year total they plan to retire on, just 70 percent of final income they would need (70K -22K-17K) = 31K Times 25 for 4% withdrawal or 775,000 additional dollars on top of the 182K needed for deferral.
It is going to be hard to politically argue that someone with nearly a million dollars in the bank is not "rich" and this strategy is needed for the average person. Especially when the average person only has $56,000 when reaching this age. I think a reasoned view would show that only those far far above average in savings are actually able to take advantage of these rules.
When you compare that to top earning individuals who would have 20K at age 62 and 36K at age 72 or 40K and 72K respectively, it is easy to see where political issues are going to be pointed out.
Average Retirement Savings by Age