Thank you for this Lorenz.
From the quotes included in the Al-Masry article you linked to, it would seem that the opportunity to host a party and engage in gift exchange are attractive factors to those who throw these Christmas-themed parties, I’d be curious to see how this is done and reappropriated (or not) the Egyptian way.
Regarding the secularization of Christmas, I have been interested in how practicing Christians see this. I take this opportunity to point out this old post (in French) http://www.urbi-orbi.net/2008/12/noel/
presenting some contemporary reactions, among Christian groups, to the perceived emphasis on consumerism and secularization of contemporary Christmas in France. The Santa figure is also seen as almost evil by some, a phenomenon that Lévi-Strauss already wrote about in the 1950s after a giant Santa was ritually burnt by a Roman Catholic group in France.
Happy Holidays! xo