The code you can inspect is analogous to directions on a map. Some have noted in this thread that for them directions on a map actually do help them learn the territory. I have found that they absolutely do not help me.
That's not for lack of curiosity, it seems to be something about the way that I'm wired that making decisions about where to navigate helps me to learn in a way that following someone else's decisions does not.
You have to study the map to learn from it. Zoom in and out on surroundings, look up unfamiliar landmarks, et cetera. If you just follow the GPS or copy paste the code no, you won’t learn.
The problem is that coders taking this approach are dominantly ones who lack the relevant skill - ones who are taking that approach because they lack that skill.
It still gives you code you can inspect. There is no black box. Curious people will continue being curious.