Often (not always, of course) when we hear praise for schemes which are simplified so that players can play more instinctively and thus play faster, it's players talking, not coaches. Coaches, theoretically, would be more objective about the virtues of such an approach, but maybe some of them are just too lazy to scheme up something more complex, or to do the work of coaching the players up to make it work. You usually hear such talk, I think, from the defensive side, except perhaps for a young quarterback or on behalf of a player with limited cognitive skills, or perhaps for running backs, whose instincts are more in play than for a center, say, who absolutely must think things through. To the extent that there is an argument here, it's difficult to say which side is "right." There has to be a balance, I suppose, and each individual case is very different.
The question isn't limited to sports, of course. Who hasn't thought that if the blowhard bosses would just stop with all the d----d bright ideas and get out of the way, we could do our jobs better. I had this firmly in mind when I was a department head: my job was in large part to protect the group from the nonsense (and its associated paperwork!) which came down to us from above me in the pay grade, so they would free to get on the with the job. This works, if you've hired the right people, and that is no doubt true in sports as well.
Sorry for the rambling: I'm stuck here waiting for a d----d phone call.