They've been the lowest on Chourio for a while now. Only had him at 10 last year and 7 midseason. They're more of a scout the statline-type outfit compared to BA and MLB. Interestingly, they had Corbin Carroll at 6 last year, while everyone else had him at 2 so kind of a similar situation here.
To say Chourio doesn't do anything better than Caminero, though, is just plain wrong. First of all, he makes more contact than Caminero. And then there's the whole baserunning and fielding thing, which he does a lot better than Caminero. Only thing Caminero actually does demonstrably better than Chourio is hit the ball harder.
Also, I don't know how you justify Crews over Chourio, if you're going to move Langford all the way up to 2 on the basis of his 40 game sample size. Chourio's statline in AA was way better, and at 19 compared to Crews' 21.
It's not egregious, but the process is part of why I think BP is lower quality than BA, MLB, and even Fangraphs.