[danabramov]

You may as well make this argument against human speech. We need secure transport, not gibberish protocols.

[AsymetricCom]

Not really even a close metaphor, since human speech isn't a internet standard I could build devices against and sell to customers as compliant.

Considering that DPI devices are already sold to parse json-desribed protocols dynamically, I think you are a bit uninformed about my statement. It is not hypothetical.

[icebraining]

Some DPI software also processes English, should we stop using it?

If you want security, you need encryption, not obscure encoding formats.