1) The negative image of coding bootcamps on HN is worse than in industry, not the other way. There are plenty of coders who came from bootcamps now working in industry. I agree that you aren't as well regarded a CS major, but it is definitely better than self taught.
2) The things you listed he should do are pretty much the things you'll do at a coding bootcamp. If you can stay on a good course and keep yourself motivated, it is completely reasonable to think you can be in a similar position in the same time frame (with an extra 10-20k in the bank.) However, you should be very honest about those two qualifications. It's quite easy to get side tracked/not do as much work as you think you will.
3) You're right on about the new tech. The reason that we think it's cool is because it's the thing that everyone is talking about on HN. The reason there is so much traction with all of these topics is because there aren't a lot of applications for them and a lot of people are playing with them. I'd expect an entry level coding job to be writing REST APIs and front ends for CRUD apps. You might be pleasantly surprised, but I wouldn't quit your job expecting otherwise.
a) The thing that isn't frequently talked about wrt bootcamps is that you don't get a job after the bootcamp. I'd expect 30-60 days of applying and interviewing before you get the job, just FYI.