As a Jetbrains user, somewhat annoying to see everything in VS Code.
You can find docs on using Deno LSP with other editors here: https://deno.land/manual/getting_started/setup_your_environm...
You should work on 1. your reading comprehension, and 2. making relevant comments to the discussion at hand.
JetBrains/WebStorm now utilises the Deno language server directly (the same one that the VSCode integration uses) but they control how features are expressed in their client and when they deliver them, something the core team can't directly control.
So for various reasons, VSCode ends up being the focus.