I actually find Zed pretty reasonable in terms of memory usage. But yeah, like you say, there are lots of small UX/DX papercuts that are just unfortunate. In some cases I'm not sure it's even Zed's fault, it's just years and years of expecting things to work a certain way because of VS Code and they work differently in Zed.

Eg: Ctrl+P "Open Fol.." in Zed does not surface "Opening a Folder". Zed doesn't call them folders. You have to know that's called "Workspace". And even then, if you type "Open Work..." it doesn't surface! You have to purposefully start with "work..."