I agree with the comments above a lot of these questions are very concerning, however it wouldn't surprise me if staff in CLC centres around the world do their training this way.
The lack of confidence in a lot of these guys is frightening it is almost like dealing with call centres where people read off a script, that is why the actual job of load control is / has been diluted, I recall completing re trimming at A/C side due to stop issues on a B747-400 whilst doing a manual load sheet, nowadays someone stands at the Aircraft makes a call and asks to swap 2 bins and gets told no.
Still that's progress I guess airlines like it that way and there is minimal training required at either end.