Only if you are going to use Rails. It seems that in all other domains Ruby have lost to Python, Kotlin, Go and others. Personally I love Ruby and Rails, I prefer clean Ruby syntax over Python syntax, however except Rails all other activity is going in other languages. Kotlin code with type inference is as concise as Ruby code but executes 50x faster. Ruby simply won't have ML libraries like Python has.

For a web programming I would switch to Kotlin. However Ktor is still lacking compared to Rails in most important areas for me. In Rails common operations like upload a picture, serve is later in a different resolution, migrate a db, quickly create CRUD forms, etc. are just a few lines of code. In Kolin web frameworks you would have to invest much more time to glue together different libraries to do the same job. Many won't agree with that opinion but for me Rails ActiveRecord is the best part of Rails. There is no a such complete thing for a Java ecosystem. It is a beautiful compromise between ideological (only pure plain Java objects are allowed) ORMs like Hibernate and plain SQL approach like jOOQ.