Was there any other reason to start some properties with @ than to make it harder to generate the JSON?!?

The subject says it all.

This "thing" is insanely overcomplicated and overdesigned as it is, but
whose bright idea was it to invent the "@type" and "@content"?!?

For crying out loud, you supposedly chose JSON so that people could build
the structure in some other language and then serialize the object into
JSON and include it on a page or something and then you invent this?

HOW AM I SUPPOSED TO HAVE A PROPERTY NAMED @type IN C#?

Yes, I know I can first generate the JSON with sane, doable property names
and then search and replace to get your insane, idiotic "@type".

Jenda