3) That depends, what is an EJ?!
EJ = equipment junkie. They lurk in the dark corners of the interweb, the table tennis forums. They will argue for hours / pages that this rubber / blade is better than that one, they test rubber after rubber, blade after blade, and wait for the holy grail of equipment, which will optimise their performance to make them win easily, suiting both their strength and their weakness, and replacing all other things in mind and body that make a good TT player.
Just look around you.
On a more serious note, what you and Ben have done has been great. I hope you both got much out of it It was certainly interesting to follow, both regarding your improvements and Ben's coaching technique / tips.
I guess many coaches have thought "I woud not have done it that way", or something similar after each video was released (I certainly did at times!), but we (coaches as well as players) all have different styles and ways to express what needs to be achieved.
One thing I wonder is whether you talked about the game. What to do, when to do it, concepts like where the spin is on the ball (spin axis), ways to play at different distances from the table, what is achieved with proper technique, shot selection, etc. These help players' understanding of "the game" and in the end improve their performance simply because of that.
Finally, do you think you have now reached a stage where you diagnose and correct your own technique?