Nothing in Zunino’s batted ball profile suggests he’s unlocked the secret to hitting the ball effectively: Statcast suggests he outperformed his batting average by 35 points, and I wouldn’t be surprised to see it fall more.
Uhhh...what? Without even doing more than scrolling down the page, Zunino had the highest Line Drive Rate (+3.9 over previous high), Pull Rate(+1.6), and Hard Hit Rate (+3.6%) of his career, not to mention the highest HR/FB ratio of his career. Let's dig slightly deeper though. Zunino also had the 15th hardest average batted ball contact in the majors after 5/23 (when he returned from MiLB) of 512 players with 25 contact events. He also had the 12th Highest Pulled FB Rate and Pulled Hard Hit Rate, and 26th highest Pulled Line Drive rate among all hitters last year.
There's a real reason to believe Mike Zunino broke through, I'm fine with casual analysis and assuming some regression, but that analysis felt vindictive (especially considering losing 30 points of average would leave Z about where he was in 2016...as a top 10ish offensive catcher, not "an overrated back-end catcher in deep mixed leagues."). If you're going to be casual and not check, maybe also don't make declarative statements about player's skillsets being mirage-like.