Why is layout node not recommended?

[zvictor]

The wiki discourages the use of layout node but does not elaborate on that on any way.

You can optionally add the layout node directive in your .envrc to have the node_modules/bin path added to the PATH (though, this is generally not recommended).

Could someone enlighten newcomers like me on what's wrong with that?

[zimbatm]

@wilmoore added this to the wiki