The very fact that they persisted even when it was costing them repeatedly is a measure of the confidence they have in the way they have been told to play.
They will make mistake after mistake and let in goal after goal, and over time they will continue to learn.
Wilder said it himself in his interview before Stoke, in fact he says it repeatedly in press conferences: "We want players to take more chances. Risk and reward."
Against Stoke, Burrows was cornered and surrounded deep in the left back position but he didn't take the safe simple option and hoof it into the stands, instead under severe pressure he found a logn diagonal ball out to Gilchrist which led to a very promising attack. Risk and reward. Development football.
That time when Cooper nearly gifted them a chance. Risk and reward. Development football.
If teams like Crewe are well managed - and I bet they are - then the players will see the result as entirely, completely, totally, and utterly irrelevant. They will keep looking for passes, they will keep looking to turn defence into attack, and they will develop into better players because of it.