WASP was always a pejorative way of saying "established white European-ancestry American aristocracy".
It never applied to poor white people. It is just a label for the most common and most established phenotype in early America, up to and including the mid-20th century.
The label has lost salience over the intervening decades, but it has not faded down to be lost in the ambient level of population wealth and power.
AFAICT, you intentionally goaded this thread into a dissection of WASP-vs-white, which serves zero purpose except to give you a chance to espouse something which you still haven't done, but strikes me as likely to be pretty boring after all of this.
How is this not just blatant racism again?