I'm not a huge facebook fan but this thing about only being able to disable but not delete the app is misleading about how sinister it is.

All it means is that the app comes installed by being part of the ROM image. It can be disabled which is essentially the same as deleting it, except you don't get the space back (which is fine since it's the rom, you can't use it without reflashing anyway). Once disabled, the Facebook app won't be able to track you or be loaded into memory.

What this deal is really about is the Facebook app coming preinstalled on new Samsung phones. Bloatware: yes. But don't make too big a deal about the "undeletable" thing.