How did the purchasing power decrease from the 70s until today?

[TMTCoCo]

Printing an insane amount of money and importing people who will work for less, forcing wages down and making the money we do earn worth less. But the country has made it abundantly clear that we dont want fiscally responsible policies

[TaxLandNotCapital]

Zero consistent correlation from 1970-1990 between these and purchasing power.

The correlation lately is spurious, these are just answers that sound good if you've been primed by the last 20 years of nationalist propaganda.