I wholeheartedly disagree here, and think it very much is an issue with bootcamps. If a bootcamp doesn't even introduce its students to such concepts as classes, instances, OOP, and basic data types, then it has failed to adequately serve its students with fundamental knowledge and offered a shitty introduction to programming. I've worked to mentor a few people who have come out of bootcamps, and I see this lack of knowledge consistently. When I do, it has never been because the student couldn't be bothered to read or study. It has always been because the concepts were never mentioned and introduced, and thus the student didn't even know it existed, thus that it was something they should understand. Whenever I have introduced the concepts, the students eat that shit up, because they really are interested in learning.

Personally, I think a great many bootcamps are poor places to learn programming because they overwhelmingly focus on web-stack. When you're learning to place shit into the DOM, you don't need to care if it's an int, string, dictionary, array, etc. When you aren't being taught to store your data in an SQL table, you don't become aware of data types, parsing ints, casting strings, coercing one type to another, validating types, etc. You're just being introduced to storing blobs of JSON into Mongo or whatever. Hell, when I started with JS so many years ago, I was rather dumbfounded there was a difference between == and ===. This leads to fresh, potentially valuable developers who don't even know what they don't know. And when that's your starting point, it's a bit unfair to think it's the students' fault. We wouldn't say that of CS graduates.

Bootcamps provide an often too-rudimentary introduction to programming with poor technologies chosen for education. They'd be much better if they sought to teach real CS concepts, not just web-stack basics.