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VSCode from Microsoft is also wrapped in electron and uses a fraction of what Atom is consuming. Not being native has nothing to do here.

The memory consumption is a magnitude larger in JavaScript than native.

So what?

There are javascript editors that don't use as much memory as atom. What you're saying is irrelevant.

So if this is hard to understand, the conclusion, in simple words:

the memory consumption for a javascript editor will be a magnitude bigger than native.

In my example 66Mb Sublime vs 620MB VS Code (no plugins)

halokonrad isn't talking about sublime. He's talking about Atom vs VS Code.