It’s a valid point. Lots of people use vim for its sheer speed, which you throw out with the bath water when switch to electron.
I haven’t tried the app yet but it seems that this is not true for this editor as NeoVim is the backend, not JavaScript.
1.5G for a fresh startup with no files open is unacceptable when looking for a lightweight editor. That's what made me go back to vim; my previous laptop with 4G RAM couldn't handle vscode + a browser without going out of RAM.
I had some hopes for oni but so far it doesn't solve any issue I have either with nvim or with vscode.