We tried hiring a few people with just bootcamps. Only a few (so hardly a representative sample), but none of them worked out. As soon as they had to try something even the slightest bit different than what they'd done in the bootcamp they were lost. There were people with degrees in unrelated fields who then did a bootcamp who were good, and almost all of the CS/CE/EE people we hired were good.
I'm not saying this is always the case, but the two years of CS fundamentals seem to be valuable, AND the two years of unrelated core classes seem to be valuable. It might just be how it forces you to engage with and learn things you don't care about (because there will be times in any job you have to do that), or the people skills of having to learn to deal with professors and other students, or the pattern of constant learning and adapting it ingrains upon you, or something else entirely, but per the link, I don't think a bootcamp should ever be viewed as sufficient preparation for a career in development. It's fine in tandem with other things, but it's extremely limiting on its own.