I strongly agree with the following statement...
"Interestingly, the countries that have adopted bullpups with good experiences are mostly countries where potential soldiers have little or no experience with guns before military experience."
As for myself, a long history with the M-16/AR-15 and other more traditional rifle designs, I dont like the feel of the bullpup design, I dont like any bullpup trigger Ive pulled yet.
The statement above about soldiers having little to no firearm experience before the military holds true even in most cases when they are first exposed to the M-16 rifle design compared to traditional rifle designs.
Drill sgts and firearm instructors in the military years ago used to ask how many in the company had alot of former fiream experience, and did alot of hunting. They would make the statement that those who answered up would be the lowest initial scoring in qualification, and would take the longest to adapt to the M-16 design.
Personally, after my initial few firings and qualifications, my scores went to expert, and I never shot below that afterwards.