The same is not true for any binary file. A hexdump of a plain text file is not as readable as opening the same plain text file with any basic text editor such as any notepad clone. That's the whole point: no one needs to install any software, let alone a specialized client, to read any human-readable format.

More to the point, no one needs to install a full blown database engine to read a plain text document.

You may argue that specialized tools make the job easier, but you also need to acknowledge that requiring specialized tools just to open a text file is silly.