Where, for example, in 2015 any SaaS or API would provide a gem (lib) to interact with it, today it's no longer the case. Modern PSPs, storage, search engines, etc almost all lack an official gem. Often lack even a third party one.
And where back in 2015 there were popular systems in Ruby outside of rails, all those are crumbling and/or gone. Jekyll is no longer the go-to static site manager, Chef and Puppet no longer the obvious devops tools. And Ruby is completely absent from emerging technology (AI, blockchain, WASM, data science, etc).
I'm afraid Ruby is becoming a legacy language and Rails' will be a legacy framework soon. Where the bulk of the Ruby jobs are to keep old stuff running and maintained. Afraid, because I'm still primarily Ruby developer.