It has zero effect on my workflow though. I can run Chrome, Safari (for testing), Outlook, Slack, music streaming, etc. without any slowdown when developing with Atom.
Edit: Just checked, after using Atom for two days straight it is currently occupying 80MB of ram. Anecdotally, the claim that Atom is a resource hog is actually wrong.
I think that's his point. To some people, like leejoramo, if their text editor is a resource hog then it is not running fine.