I really didnt think to much about the article but you make a good point.
I barely do any tri accesory work. 3x3 would be good for me. For all 3 lifts I mostly focus on the lift itself, I dont focus on getting the accessory lift stronger to make my bench stronger. I found it doesnt work for me. I increased my incline bench,overhead press, dips, tri pushdown and nothing moved my bench. But when my bench when up, all those accessories when up..
After summer when Im more into heavy lifting I might give this routine a try. I read this routine over 2 years ago and brushed it off.