Comment by gf000

Any production-grade project will use either Maven or Gradle for builds. There are CI/CD pipelines, lints, etc, how would all these work if you could only build through an IDE?

Sure, there are some awfully dated companies that still send changed files over email to each other with no version control, I'm sure some of those are stuck with an IDE config, but to be honest where I have seen this most commonly were some Visual Studio projects, not Java. Even though you could find any of these for any other language, you just need to scale your user base up. A language that hasn't even hit 1.0 will have a higher percentage of technically capable users, that's hardly a surprise.