Agree with this - except that I would say defenders at all levels make mistakes. They also block shots on the line, clear the ball away from corners and set pieces, make last-ditch goal saving tackles, etc. You have to offset the good things they contribute against mistakes. Goalkeepers can make worldy saves, then let one through their hands; strikers can score the goal of the season, but still miss a sitter.Lets put this to bed once and for all.
Defenders at this level make mistakes. Deal with it.
They're not the reason we haven't scored in three games.
Even the best defence will get it wrong once in a while.