Right now, the median household income in the US is $67,521 and the mean income is $71,300. The poverty line, as defined by the government varies by numbers in the family from a low of $13,590 for 1 person to a high of $46,630 for 8.
That doesn't sound like most people in this country are "barely above the poverty line."
I don't know where you got that "90% of workers haven't seen a wage increase in 12 years (eg., since 2010).
Maybe the system doesn't work for YOU, but it does for most people.
https://www.huduser.gov/portal/datasets/il/il22/Medians-FY22-Notice.pdf
https://aspe.hhs.gov/topics/poverty-economic-mobility/poverty-guidelines
What's dragging people down at the moment isn't low wages but high inflation. If the fucktard in the White House would dump his race to the radical Left, we might get things back on track.