Here's a brief excerpt from his post:
Attending the Christmas "Family Mass" has the added benefit of having 'done Christmas Mass' nice and early too. The family, or anyone else who pops along on Christmas eve, can have a relaxed evening afterwards and a Christmas day without the burden of having to get to Mass on Christmas day, especially with the family.
What have we done to Christmas day? Kiddy-antics aside, even a solemn Latin Mass on Christmas eve is a bit of a problem. It doesn't break any rules, but the Pimpernel believes that allowing a vigil Mass of Christmas is one real mistake of the new missal. It has more or less destroyed what was liturgically special about Christmas day itself: midnight Mass.
Staying up that late can be a real treat for children, and teach them a lot, without any need to get up to childish antics. "Mom, why are we going to Mass so late?" "Because this is the night on which our Saviour was born, my dear." Not bad that. Or on the morning of Christmas, the sacrifice of going to a Mass as a family, of waiting until afterwards for all the family rituals, presents, etc. to begin, says very clearly that Christ himself is put first at Christmas. "Dad, do we have to wait 'till after Mass?" "Yes, son, first we must thank Jesus and celebrate his birth, and worthily receive him in Holy Communion, because he is the reason why we give presents and celebrate today." That sounds like a true family Mass, and a true family Christmas, to me [emphasis mine].
The sad fact is that many families do now attend a vigil Mass for Christmas so they can open gifts early on Christmas morning and do not go to Mass on Christmas Day itself.
Growing up, my family went to the 10:15 a.m. Mass (or it was 10:30 a.m.; I don't remember). We were allowed to open one present on Christmas Eve and the rest when we returned home from Mass. It didn't do us any harm and helped keep a proper perspective.
When asking why people do not attend Midnight Mass as they did in days gone by, I am often told, "People can't stay up that late, Father." I simply do not accept this answer; they stay up just as late on New Year's Eve, though often for very different reasons.