Intellij is always too buggy and slow for me. Things it helps you with - it's a language verbosity problem. Ideally you should just use better language.

And they also stopped bringing any more advanced features, like refactoring from null to Optional for example, or reversing template method.

If we're talking about java specifically vscode and vim would just use eclipse language server which can do most of the things intellij can like refactorings and snippets. And for other languages like python ms language server is even better than pycharm for example.