Four out of the author’s five “things” are adjustments to HUD policies and procedures. This is the sort of thing the President, as head of the executive branch, should be able to direct his appointees at HUD to accomplish.
(I am not expressing an opinion on whether the author’s ideas are good, just pointing out the type of executive action involved.)
None of those suggestions is of a complete radical overhaul and redirection nature. They all seem to be small adjustments at the margin. In other words, completely useless.