This is so, so correct. I've been doing Facebook stuff for a few years now, and this rant is just the tip of the iceberg.
Other favorites:
* They accidentally flipped the switch to a new authentication mechanism overnight to a beta with no documentation. It took them over 48 hours to realize and fix this mistake.
* At one point I was asking for JSON and intermittently getting back XML instead. Apparently JSON parsers can't parse XML. Who knew?