I see this sentiment echoed a few times in this discussion thread. I use JSON daily, parsing and serializing everywhere, and yet I've never been in a scenario where I needed to parse a very large JSON object on the client side. The biggest JSON objects I work with are in the neighborhood of ~80 MB, but the client's browser never sees those behemoths. At most I return a few KB to the client's browser via an API response where it is then parsed and consumed.

Is this notably a problem where the back-end is written in JavaScript?