Which language do your backend guys use VSCode for?
I believe Sublime is a superior product in terms of performance and stability.
Reasons for switching back:
1 - Atom has some long-standing bugs that compromise its usability (e.g. there is a bug where you basically can't scale down a window after it was maximised: https://github.com/atom/atom/issues/10720 )
2 - Atom is slower, you may think a fraction of a second when opening a file or doing a search should not make much of a difference but, when you are using an editor every day for many hours, it ends up affecting your productivity.
PS I liked VS Code but it's different enough from the other 2 editors that it would take time for me to become proficient with it. I especially liked VS Code's debugging features.
Yet. Little by little, rather than invest in windows-only vstudio, they'll enhance code until it's building all the same stuff as studio and then they'll announce how amazing code is and stop talking about studio alltogether.
When MS ghosts a product, you know what its future is.