Probably it's just down to a different understanding of the word "internalize".

I know how to _use_ bazel effectively to do my work. I'm comfortable with its well-designed surface but whenever I've tried to understand the inner machinery I've given up - especially when presented with a bunch of custom skylark rules code.

It's like an anti-git in some regards - the surface of git (the CLI) is an abomination in many ways but the the mechanics of the tool are so ingrained and the model is so clear and simple - I never feel uncomfortable.

I've a need to have some comprehension of the inner machinery or the underlying model of my tools.