My general observation, and my 2017 son likes to tell me this: it's harder than it looks in the stands. Or something to that effect. We've all seen our son's chase a first-pitch CB (or one drops in), lay-off a fat second pitch FB, and get in a deep hole and chase (or worse...look at strike 3). All part of the game. Pros do the same thing from time-to-time.
I suppose the key is whether this is anomaly, a trend, or a consistent approach/result. If the latter, he won't be lead-off for long. Hope it is the former and he's back to getting on base soon.