It’s only worth it if you’re planning to work in Java or one of the other JVM languages.

If that’s what you are striving for, is worth it to spend the effort ahead of time. If your goal is more agnostic to tech stack, learning Spring Boot won’t be worth it until you land a role that uses it.

It might be worth dipping your toes in the water anyways. But frameworks like that shouldn’t be bothered with without inherent interest or need.

Personally, I’ve no interest in working in Java, Scala, or Kotlin so I’ll skip it.