Does joining a coding boot camp for full-stack JS still make sense?

Yes. the hard part of building projects is building a startup-like project and not just toy projects for fun. Having real users and iterating and deploying something publicly that is used. Even the best bootcamps don't produce projects people use. Like Codesmith's OSP capstone projects, 90% are untouched or dead after the people graduate. The larger projects that have undergone many teams working on them, I struggle to find anyone actually using the project. All the GitHub stars are fake and farmed from the community. I tried using some of the big ones and found security problems and broken experiences and I really don't think these things are used. So you can see that just making a project that is a useful product, launching it and getting people to try it and then making iterations based on the feedback is already better than anything a $22,500 bootcamp gives you.