The walking part is true, though I was a little surprised to see how much worse Cowser's K and BB rates both are compared to last year. 2023 he ran a 22:13 K:BB, this year it's 33:9.
Obviously this year's overall results are better. But it seems like he's still calibrating the aggression meter to MLB pitching and the current iteration has led to crushing the baseball (he's at 99th percentile barrel percentage), but a ton of K's and less BBs. Hopefully he can find a happy medium, similar to how Gunnar evolved away from being too patient at the beginning of last year.