A subscriber asked me this, and it's a great question for numerous reasons. Firstly, some bootcamps still teach it, despite its decreasing adoption rates in enterprise development settings.
Secondly, Ruby on Rails (RoR) is one of the earliest backend web frameworks to hit the scene in late 2005. Despite its OG status, it seems to be falling off the popularity chart. Does that mean you should avoid it, along with the language that was used to build the framework?
Is it a bad career investment if you dedicate all your time and money to learning this language along with RoR?