It's a fair note about tooling in general, I started with the code editing because it's the first thing before you can taste and judge the rest.

I think my frustration comes from the fact that in most other ecosystem I can use the tools I like, but in Java I have to use things like Intellij.

Intellij CE may be open source, but it is entirely owned by a private business whose primary goal is to sell their product - which affects how well are the integrated, open to accept community feedback, etc.