4-1 was exactly what I predicted, so that doesn't bother me.
Patience will be required with the results.
I think the overall intent in the PP will work out well in Asian conditions. They got wrecked in multiple games this series because of the swing and bounce, which has always been an issue for Pakistani batsmen. It doesn't matter which batsmen do it, but the intent has to be the same moving forward or they aren't winning a WC.
Beyond the younger batsmen being unable to adjust, they have some coaching issues to work through too. They have made a lot of silly blunders including toss decisions, power play strategy based on the pitch, and general team composition.
Quite similar to them putting rank turners against WI in Tests and assuming that's enough to win. You still need to game plan and even more so with younger players who will make mistakes on their own.