So an argument of the form "salaries don't keep up with inflation" is backwards (usually). They already did!
Arguments about "why" just aren't helpful here. Everyone thinks they're smarter than everyone else and knows policies that will be perfect, and everyone is wrong for the same reasons. It's a cyclic feedback market and it just does this stuff, for the most part.
But you absolutely can't look at things with a microscope and say "salaries don't keep up with inflation", because that's (almost by definition) never true.
Increased prices of labour or products is always a consequence of inflation and never the cause of inflation.
And to my point upthread: the factors that result in changes in the money supply are themselves subject to influence by lots of things, including stuff like the rate of inflation. It is absolutely, 100%, a feedback network.
No, the are really smart. You have to be very intelligent to be able to contrive a way to support an idea that is completely wrong. Intelligent people almost always support the most idiotic political, economical or cultural ideas, because that is a mental challenge that is satisfying. Using the sheer force of their intellect to "beat" normally gifted people in arguments about these issues, they delude themselves to believe they are right, even though they picked an absurd angle just for the challenge.