To be fair, Barrett didn't miss those tackles, Barrett didn't drop those balls, Barrett didn't fail to play the ball correctly, Barrett didn't not take the kicks at goal (well, maybe he had a hand in that)...
However, Barrett DID go into the game without a reserve half which resulted in Koroisau playing 5/8 (did he touch the ball in that position???) and LEWIS BROWN PLAYING DUMMY HALF!!!!
I'll repeat that slowly.... L-E-W-I-S B-R-O-W-W-W-W-N played D-U-M-B-Y H-A-L-F!!!!