Of course, if you read 5Gold's post, you will notice he said "AL Leader". Not MLB leader. Over that stretch, the MLB leader in Blown Saves is Edwin Diaz. I assume we should attribute more failure to him. Barnes total ties him for 10th with Alex Colome.
In order to lead the AL in any category over a 6 season stretch, a player would benefit greatly from being in the AL for all 6 seasons. That original post about Barnes is actually penalizing him for sticking around. Worth noting. Barnes also leads all AL relief pitchers in in appearances over that stretch.
Also worth noting, Barnes is third in Holds over that same stretch with 80. His 126 Holds plus Saves is 5th in the AL, behind Alex Colome, Aroldis Champman, Liam Hendricks and Ryan Pressly. It's not like he was some sort of save-blowing machine who did nothing but ruin Sox leads. He was a decent reeliver who had a horrible 10 IP stretch to end 2021 that carried over to start 2022. But he also finished last year very strong...