"Rails is still the most taught web framework in prominent coding boot camps." This is not true. Rails is the most common back-end framework at coding bootcam

"Rails is still the most taught web framework in prominent coding boot camps." This is not true. Rails is the most common back-end framework at coding bootcamps. But if you're trying to understand is happening to Rails, the biggest update is "Rails' model of serving HTML is dead/dying, and React took over a lot of Rails' old job". Bootcamps mostly teach JS now, for that same reason.