Well in that case I hope MS gets a second wind like it does for VSCode. I use IntelliJ daily since I use a lot of the bells and whistles, but VSCode is great and also runs on Electron. It seems that there's a lot of things MS is doing right with the tool that Slack can't or won't.
Microsoft is the only company I've seen that can actually get any performance out of Electron, and even then it's still a resource hog. In their favour, though, VSCode is written exclusively for Electron, unlike many of these apps which are essentially SPAs lightly reworked for a non-browser.
Maybe WASM to Electron is in the horizon? :)