There was nothing "wrong" with advocating a different approach.
Yes, the game panned out well with the 'play a strong 11' option, but it's non-sequitur territory to then intimate that it couldn't have equally turned out ok with the 'rest our key players' approach.
Humans often seem obsessed with labelling predictions and/or opinions as "right" or "wrong", usually with the benefit of hindsight.
Those advocating a different approach were simply that.... Different.... They weren't "wrong"...