"In a K-shaped recovery, different parts of the economy move in opposite directions at the same time following a recession or downturn. One segment—the upper arm of the K—experiences an increase in wealth due to rising asset values or incomes. The lower arm faces increasing financial strain due to declining purchasing power along with stagnating or decreasing wages." (source: Britannica)
So you have it exactly backwards: the K-shaped economy refers to the continued rise of asset valuations as workers real wages decrease.
But I'm not going to keep arguing with you since you seem to be afflicted by "Math brain" (defined here by the belief in homo-economicus where humans can be accurately modelled as a selfish calculator - and please don't correct me on the calculator metaphor, I'm being hyperbolic).
Let's take what we do know from AI and cognitive science seriously: if we accept that humans are some sort of biological prediction machine, that doesn't give us a completely predictive model. There's a sort of "measurement problem" when it comes to self-prediction: while the goal of environmental prediction is clearly accuracy, the goal of self-prediction cannot be accuracy since self-prediction is inherently accurate by virtue of the actualisation of self-predictions. What then discriminates within the self-predictive model between multiple actualizable self-predictions?
If Math-brained believers in homo-economicus are to be believed, then human behaviour is completely determined by what basically amounts to greed. Certainly that's what generally selects for those who occupy positions of power and prestige in our society, and thus based on current political norms has turned into a somewhat self-fulfilling prophecy.
In this since Nietzsche was right: "God is dead." He was killed by enlightenment thinking and replaced with rational self-interested agents governed by predictable macro-economic models... which keep being wrong, because humans are not universally greedy and behaviour, politics, and psychology actually matter a great deal. (Nor is the new god of "rational" selfishly motivated acquisition, expansion, and power-seeking really that new of an invention - he is sometimes called "Moloch", and is in fact perhaps the oldest God, and humans keep discovering he's a pretty shitty God to worship; I have no doubt that he will prove equally destructive and unkind to us if we insist on continuing to and/or reverting to worshipping him dressed up in "rational" mathematical economic language).