Rubio is definitely part of the establishment. He has mismanaged his finances is why he isn't exactly rich and depending on which research data you look at and for what purpose, Hispanics are many times now considered white....just saying. I would still vote for him over Hillary.
So he's only considered white by some, isn't rich by most standards, and he's old only if you're a teenager......
That means the characterization of Rubio as on "old, rich, white guy" is a stretch beyond credulity.
Unless one wants to.... what is that expression about the suspension of disbelief???....... make a point dissing Rubio without factual support.