I think it brings to mind a real phenomenon of WASP types humble-bragging about their affluent lifestyles on social media. The father usually being in some sort of finance/insurance/tech field that is disproportionately white due to systemic barriers to entry. These types are the epitome of privilege yet the most oblivious to it, with long Facebook posts bragging about their happiness while lecturing about why this is the best of all possible worlds. I think every part of the US has this type of family but it’s especially common in the Bible Belt. (I point out the US because to me this family is obviously from US.)

All that said, I agree with you. This is really low tier content. A Christmas photo is extremely common in US, and nothing in this photo indicates that any of the above applies to this family in particular. It’s a random white family with no context. Many nonwhite families in the US would take exactly the same photo for Christmas.