The problem with systems that are really just frameworks for other to build on is they become reluctant to build stuff that plugins exist for. The philosophy becomes to depend on the plugins rather than built out needed features. This entrenches the spaghetti pile of plugins.
Plugins are great and necessary - Jetbrains IDEs have plugins. The difference is a philosophical one - are plugins there to provide core functionality, or are they there to provide uncommon use cases? VSCode uses plugins for basics, JetBrains builds basics in - with JetBrains you can never install a plugin and happily work away. With VSCode, the very first task you must carry out is to start managing your inventory of plugins.