He didn't see her photo...
...his mum did! It says it in the article, in black and white (unless you've been playing silly beggars with custom style sheets in your browser again).
It's men that shouldn't see a woman's face, and his mum is quite likely not to be a man, so it's no problem at all for her to see the potential daughter-in-law's face. Really she should have insisted on meeting her in person, so maybe he should be suing his mother for neglect of parental duty too....
If you're going to be derisory about other people's cultures, get your facts straight first!