VSCode has great marketing, and engineers building an amazing product. Microsoft has the resources to touch on so many things.
The strukture, is an open source project. Taking community input, and implementing it. VSCode is using NodeJS I think, and the strukture is written with Go. I've programmed for Node and Go, Go has better performance (https://www.devteam.space/blog/golang-vs-node-js-comparison-performance-scalability-and-more/) (https://www.peerbits.com/blog/nodejs-vs-golang.html).
What can I add to the editor to convince you to just give it a try?