Sounds like the problem was more the company's reaction than any fault of Facebook. I know a lot of companies today when interviewing prospective employees ask if they are on Facebook and look to see what kind of post they make, and some have not been hired because of what they posted.
Seems harsh treatment for a single dad and a vet.(My son is also a single Dad and a vet of the Gulf War) If they had a problem with his post seems a warning would have been more appropriate. Sorry for you friends hard luck.
Mark 1:17 ...I will make you fishers of men