The nice thing about something like a barrel is it's a process stat. Generally dongs are ~half of barrels. So Kevin should probably be closer to 8 than 12, and I'd guess that gap is the silly AAA environment. But even at 8 we're talking a 39 homer pace.
Like the contact numbers are definitely a problem, full stop. But a Christopher Morel type bat from a legitimate CF is an impact player. Or put another way I don't see any reason to think Alcantara can't be what Adolis Garcia was in his prime.
There's definitely a fine line between patience and passitivity, and at the top of the ladder swinging 37% of the time like Mathis leans towards the latter. But also it's A ball and guys tend to not miss close, so if you have a good eye you probably should be well below an acceptable MLB rate.
Like you're not going to lose money betting against every RHH 1B prospect, but complaining about what Mathis is doing at the plate right now feels kind of