Winning numerous gold gloves in a row is actually something that happens frequently. Greg Maddux won 18 in a 19 year span from 1990 to 2008. Keith Hernandez won 11 in a row in the late 70s and early 80s. More recently, Nolan Arenado has won 5 in a row and Zack Greinke is right behind him with 4 consecutive wins. These aren’t trends that only happen with specific positions. Johnny Bench won 10 gold gloves in a row playing catcher for the Reds.
Still, the fact that this occurs often should not diminish Yadier Molina’s accomplishment of winning 8 straight gold gloves.