Pretty much everything about this post is incorrect:
"People who jump BASE rigs out of aircraft, then open low rarely have the first clue about the physics involved."
Speculation...at best.
"BASE jumpers pull low for two reasons.
First, their fixed object may not be very high.
Secondly, to experience ground-rush, they need to pull below 2,000 to see the horizon in their peripheral vision."
Third: Separation from a solid object.
Fourth: To improve heading performance (for example, on a sub-terminal slider-up jump).
Etc., etc. etc.
"BASE jumpers survive pulling low because they are usually falling at much less than terminal velocity. Pulling low, at terminal velocity removes the margin of error for slow openings."
This statement ignores entire subsets of BASE jumps (terminal, tracking, WS) as well as the aforementioned differences between sky and BASE canopy openings. It also ignores the opening characteristics of slider-down/off packing techniques.
I'm not going to read 15 pages about (or add any value to) an FAA/legal conversation about BASE rigs and aircraft in the USA, but I do think you've got a lot of misconceptions about BASE jumping.