The problem is that even Microsoft choose to use Electron when they built Teams. MS got loads of developers and Teams is really a big product in terms of users.
It's quick and doesn't lag at all, even with the couple dozen plugins I have installed. Compare that to Atom (or whatever it's called now) with zero plugins.
i cant relate sadly. ive got a decent computer but vscode still takes a while to load (with plugins). neovim on the other hand takes a split second to open, and has never crashed on me, even with the equivilent of my vscode plugins