Money is only a small part of the reason why holidays and birthdays are banned.
You see, the washtowel doesn't want people having any fun. I remember when I was little (and not a witless), I would get a Wish Book from Sears long before Christmas. Half the time I wouldn't get what I wished for, but it was still fun going through that book. I liked seeing the decorations going up, and the highlight was the Christmas tree. Although it was a real cut tree, with something like 35 C7 bulbs and up as late as December 15, the progression into Christmas was fun. Then I liked it when the presents were opened. That was the peak of the holiday. It never really died out totally until well into February, as there was the fun of finding out what others got for Christmas.
Doing away with that, the washtowel manages to keep such away from those who are born in. Instead, they remember the dismal boasting sessions leading to the Grand Boasting Session, the REJECT Astaroth Party, pious-sneering, and more field circus. One good Christmas party, and many would long for that instead of pious-sneering. They would be harder pressed to accept the REJECT Astaroth Party and the Grand Boasting Session. By stripping out the fun, the washtowel can portray its fake value and get people to donate for that. Beyond that, they can sterilize people's lives by stripping out anything that means anything.
Now, would you want to go out in field circus the week after Christmas, or to the boasting session, if you received 15 or 20 presents? Would you rather study the washtowel rag, or help put up the Christmas tree or at least watch your parents put it up? On a Saturday morning, would you rather be heading to the malls, or out in field circus? If you would rather have the Christmas items as adults, imagine children as young as 3 or 4. Imagine the fussing they would put up if they had to attend a boasting session or go out in field circus all week after receiving a good number of toys. Imagine trying to keep them out in field circus past 4 PM on Saturday if they would rather be inside helping decorate the tree or watching parents put it up. Even teenagers would rather be helping out with Christmas--when I was that age, it became my job to do the Christmas tree. I got to work with what my grandparents had for decorations, but it was mine to cut down, set up, water, put up the lights, put on the ornaments, and maintain. For sure, I would rather that than do field circus.