on a sidenote: Yes, I use VSCode on my PC too. But i am a big big ATOM admirer - since i love the seamless integration into github. I do not like VSC - for its MS$ Background - I would be using Atom on each notebook and PC i have. So what is with is Atom and PlatformIO? is the Atom project being dropped by PlatformIO?
From the sounds of it, one of the biggest issues is the Atom API. There is also the fact that under the hood VSCode is basically Atom V2 (ie. the Electron based editor that learnt from the mistakes of Atom V1).