As I intended to make clear in my lengthy dissertation on your book, I entirely agree with this statement. In fact, I agree with 95% of your Ten Assumptions. That's hardly "cherry picking".
GB: As an absolutist, you assume that all matter has the same characteristics.
Not true. Although I propose a fundamental particle of mass, there are a multitude of compositions of those particles which all have distinct characteristics. A proton is different than an atom, is different than a protein, is different than your body. I have no problem with the proposition that your body can move through an atmosphere of nitrogen.
GB:[A continuum exists] between what we imagine to be perfectly solid matter and perfectly empty space.
That's simply saying that all compositions of matter have different densities. I agree. But, you can't have something called "density" unless there is a distinction between physical objects and their absence. Your body can walk through air, but it can't walk through another person's body. That applies all along the "continuum": a neutron can't occupy the same space as another neutron. There can be no "collision" of neutrons unless there is space between them that is "not neutron".
That's equivalent to saying there are no humans, only individual, unique examples of humans. You can't have an "example" of something if there is no something. Granted, that "something" is an abstraction, not a physical object: humans are entities with specific characteristics in common. An example of a human IS a human: one unit of the larger set of entities sharing common attributes.
GB: ... The things we now call atoms appear to contain mostly empty space. Even so, some absolutists assume that we just have not gone far enough and that the nirvana of perfect solidity is theoretically possible.
I'll plead Nolo Contendere, but not guilty. As I said, even if a Unimid particle is not a "perfectly solid", it provides an explanation for every physical effect of every thing. Yes, atoms were assumed to be fundamental, but even if they aren't, they provided an excellent explanation for the unique identities of nearly all physical objects. The atomic theory was certainly not useless; John Dalton wasn't pursuing "nirvana", just a rational explanation for what exists in reality:
GB: ... The absolutist’s belief in the ideals of perfectly empty space ... are the sacred texts of traditional religion.
I think you have that wrong. The absolutist belief is that something can come from nothing. Of course, I totally agree with your objection to Einstein's proposition that "perfectly empty space" has form, "contains" immaterial energy, or "creates" gravity. That's nonsense. The Big Bang Theory is nonsense: it's a religious proposition of the creation of something from nothing (or at least from the abstract conception of some "supernatural thing" that "creates").