I decided to do a little Statcasting. Not sure how well links to there work but it should be a bunch of relevant stats by month going back to the start of last year.
Caissie's power numbers picked up a bit in the second half last year, but have exploded this year. Hard hit rate over 50% both months is very good (80th-something percentile), but the barrel numbers are insane. For reference the average MLB barrel rate hovers around 8%. 20% is elite, there have only been 11 qualified seasons north of 20 since Statcast was implemented. Aaron Judge is the only guy who's ever topped 25 in a full season.
The whiff rate is higher than last year, and last year was already kind of at the top end of acceptable. Here in May he's back closer to last year's range. He ideally would keep chipping away at it, but if the power is even close to legit it might not matter? Joey Gallo is right there as an easy comp.
It hasn't manifested in increased production yet, but his xwOBAs have really jumped, so decent argument that he's been unlucky. Especially since, in addition to more barrels he's also juiced his pull rate (something I hadn't picked up on yet). He's at 50% on the year which is ~90th percentile.
So tl;dr is that Caissie's batted ball profile is more or less perfect now.