Is this assertion correct? "JSON-LD is currently not supported by Bing search and others, you should test the output JSON-LD in the Google Structured Data Testing Tool before adding to your site, if at all! "

I.e., he's saying that Bing etc don't support the use of json-ld at this time.

This assertion appears at: Schema.org Organization, Corporation and Local Business Generator using JSON-LD only