It is telling that the most high-profile, most-widely-used Groovy project has chosen to rewrite their own code into Java for performance reasons, and is touting the ability for end-users to write build scripts in Kotlin instead of Gradle to get better tooling and performance.

I contend that Groovy is the "bash" of the JVM: there may be use-cases for it, but it's so prone to becoming a minefield that you're often better off using a more fully-fledged language (one that's not so slow and doesn't aggressively hide errors from you in the name of being "dynamic")