For that to happen, they would have to be on the bench instead of one of those players.
More often than not we aren’t 5-0 up, its 1 or 2.
Pep does not take the risk of putting inexperience on the field when its tight.
If KDB gets injured in the 20th minute and mahrez and gundogan arent on the bench because bernabe and delap are, thats when a likely win becomes cagey and risks 3 points.
When the league has been won with 100, 98, 99 points respectively. 1 loss can be fatal.
Putting kids (with immense promise) on the bench instead of proven internationals is a big risk.