I've had Facebook crash occasionally, but it's nowhere near as bad as you're making it out to be. If this issue didn't happen with Facebook, it would have happened with another app eventually. Something is wrong with your phone.
Also, with the latest version of Facebook, I'm pretty sure everyone is getting the error message when trying to view the photos the user was tagged in ("user"'s photos):
Although he finally got things working after a restore, I think his issue could be another app that is conflicting with Facebook, and Facebook just happened to be the app he dled last. I think the next time this happens, he needs to either, delete all his apps and add them one at a time until he gets the problem, or delete an app at a time until the problem is fixed. Just my opinion.