Arizona hasn't helped him remember. Not even thin air at AAA Reno has put a charge back into his bat. Up to age 22 his minor league record suggested he would be a hitter, but apparently some hole in his game got exposed and he's never compensated - low outside strikes if Fangraphs' heatmap is to be taken at face value.
Astudillo scoring from first on a double. "The most exciting two minutes in sports," as they say. As a catcher, I do NOT block the plate against that runner, if the ball comes to me. "The tally is yours, good sir!"
Not unheard of, but when it happens it makes news, which is maybe why you notice. Looking right now, there are 8 players in their age 19 or age 20 seasons in the majors at some point this season. Juan Soto plays for the Nationals. The other 7 play/pitch for Atlanta. Take that for what it's worth. But it's not some universal thing "other teams" are doing constantly.
To me, the way to evaluate such a draft is say that after pick #1, you are in essence drafting at the bottom of the order with the successful teams like the Cubs. Set that #1 pick aside and judge compared to those teams. It's still way early but I think in that light, the 2017 draft looks OK.
... which nobody expected! ("Our two weapons are fear and surprise...and ruthless efficiency.... Our *three* weapons are fear, and surprise, and ruthless efficiency...and an almost fanatical devotion to the Pope")
It's uncertain whether major league talent evaluators really believe Astudillo looks like a catcher when he's behind the plate, but he certainly does when running down the first base line legging out a grounder.
If this is still in response to my stated hope for specifics down in the minors, I don't expect anyone in the organization to say anything, either. This thread is in response to an outsider's view of things; I'm hoping that someone closely observing one or more minor league teams has noticed some trends.