If current tech managers have a hard time over the next decade, it won't be that management is less important. Instead, there will be a growing number of people

If current tech managers have a hard time over the next decade, it won't be that management is less important. Instead, there will be a growing number of people that have written software and are going into management that will be better at it. They actually understand what's going on around them. Software is an outlier in that front line managers can't do even a little bit of the job their direct reports do. This only happened because the industry grew so fast that the bulk of programmers were so young. That said, make sure you actually want to write code. Boot camps prepare you to make simplistic websites and mobile apps not the interesting stuff you mention. You'll have years of learning to get into those in a meaningful way.