I'm currently working for a company that forces office staff to work a half day on christmas eve with the additional stipulation, of course, that you must burn a full day of vacation to skip it. This despite the fact that no one in the company can ever remember a customer calling on christmas eve. So I'm very skeptical that this trend will grow. It took the IWW to get us the concepts of The Weekend and Sick Days, and…
I've had a similar experience at previous places, and it seemed like the rationale for the holiday shutdown was "we don't want to risk any downtime while lots of engineers are out and potentially unreachable if something breaks". All that is to say, if it's within your power to leave, the grass is potentially much greener elsewhere.