The key thing to remember in any "x is dead" meme is that all it means is "this isn't the new and shiny anymore".

Ruby is as good as it ever was, it's just not shiny anymore.

And god, I remember the shiny. I remember when Ruby on Rails came in the scene, and the whole fuss about Basecamp and how influential 37Signals seemed to be back then. Time flies.

I know Ruby is going out of fashion, but Rails remains an incredibly productive platform that can scale a good bit.

Rails 7 and Ruby 3 are excellent.

They both got major companies (Etsy, Shopify, Github, Gitlab, Airbnb,..) backing them and are not going away at this point.

Great choice if you are looking to get work done with a mature ecosystem and settle down..

Nobody bothers to write about the languages and technologies that are actually dead.

Based on what I see around me Ruby is used by a couple of big companies, while something like PHP(another language that people generally consider as "dying", probably way more so than Ruby is) is used by a lot small companies. Would be interesting to see OP's data, but instead of amount of jobs it's amount of unique companies that offer these jobs to see if I'm correct in that assumption.