Uh, what? People don't "agree" with stats. They either believe it at face value, or they fact check the stats and find, oh, this is actually true but the study was limited, or they find that it is indeed just bullshit. No agreement necessary.
Politicians taking advantage of the fact that their constituents will not fact check them is propaganda 101.
Anybody can live paycheck to paycheck if they want to - no matter how much you earn you can spend it all.
So the "statistic" or the saying has no relevance for anything.