This is uncharitable. In fact most middle class folks who sign on to this frame are motivated by basic ideas like justice and fairness. Realistically policies designed to address wealth inequality are going to make very little difference to anyone here making a typical engineering salary.
It's easy to sign on to "a rising tide lifts all boats" when you hear it the first time. But after decades of waiting, the dinghies are just plain sunk at this point as the yachts are pulling out of the harbor. It's time to try something else.