I've heard reported that Regan's tax cut wasn't popular the first few months, but much more so the longer they were in place. Probably something similar going on here then.
I suspect so as well, although I have to say, Schumer, Pelosi, Bernie and the rest are looking awfully foolish shouting this'll be the death of us and that it'll only benefit corporations and the wealthy, when AT&T and Comcast come out with announcements of large infrastructure investments and non-executive bonuses to be paid.
Given that we are at a historic low point in unemployment, and now businesses with a faction of the tax obligations than previously, large projects in the offing, it would seem to make sense that the labor market is going to tighten, cause employers to work to keep the workforce they have, and compete with each other in the labor market for the workforce they need to hire, that this may finally be the raising of middle class wages which have been stagnant for some decades now. That would certainly be something. Of course, I've been accused to being an optimist from time to time.
It may be nothing more than confirmation bias, something that pretty much every has, but I suspect you are right, they'll realize this, but on the other hand, the electorate's attention span and memory have been zapped into near nothingness by their phones and playstations.