First, be aware that ORP appears to not have been updated in a while. I dont believe it has current tax rates or tax law in it.
IIRC, SS benefits are adjusted by wage indexing until a year or two before you start taking benefits, then by CPI after that.
Be fearful when others are greedy, and greedy when others are fearful. Just another form of "buy low, sell high" for those who have trouble with things. This rule is not universal. Do not buy a 1973 Pinto because everyone else is afraid of it.