Very few sources, and none of them independently confirmed? Check.
Call to action with a sense of urgency? Check.
The only thing that this article inspires is a rolling of the eyes.
I'm very much a liberal and it would be easy for me to accept some of the things described here, but it just trips way too many red flags as far as empirical reporting is concerned.
If a true oligarchy were to come into power it would be likely to be overthrown in the west now more than ever. I posit that the best interest of the 1% is not to position itself in this manner. If the 1% truly is based in the objectivist-selfish philosophy then this would be very obvious. Without a middle class, the upper class has no buffer between itself and the poorest class. I think history states that this would be a society primed for revolution.
Your argument re middle class disappearing is addressed in the write up; the argue by strengthening law enforcement and government that they can hold the populace at bay by force. There are many past and present examples of authoritarians retaining control by force, but it’s not as elegant a solution as convincing people it’s what they wanted all along imo.