Yes this concept of overloading the room was obviously a brain fart of some ill advised dunce that was picked up by a few and then by repetition gained traction, much like spikes did in the 80s and we all know how that went: Spikes will drain the vibration out of the speaker. They will act as a mechanical diode and only allow vibration to travel one way. They will decouple and and and etc.
It astounds me how people behave if their world, in this case audio world, is turned upside down. When people feel they are not in control they revert to what psychologists call a hostage mentality, the reptilian brain kicks in and demands fight or flight so they respond defensively or lash out as in the OP’ post above in his apeal to authority. Better to engage the neocortex the rational part of our mind.
Also to bear in mind is that not all speaker designers are cognisant of room acoustics and its huge effect on the end result, they don’t really need to be because the competition will face the same issues which levels the playing field for all. The main focus would be to obtain a smooth relatively flat response with accurate phase tracking at XO. And the designers who are fully aware can’t do anything about it. Each speaker and the room it’s in will be unique. As for this overload malarky, phfff 
What would happen? ears bleed? windows blow out? dog bites somebody?
