I think the main point being made is that there was an
over-reliance on CGI, especially in the RoTR. In my opinion, it often leads to a lack of intensity during the battles and detracts from the characters' struggles that they go through.
Not to be nit picky but one of my worst CGIs was the Oliphaunts:
To create, bigger, (supposedly) better battle scenes, PJ&co decided that they would create Mumaks that are the size of small mountains. Now I know they were supposed to be big.. but that big?
*tries not to remember the Legolas rodeo scene* yuck!