Really hard to say, last year during Christmas DLP was closed. So there is not really any reference. My thoughts are it mainly depends on whether or not the Pass Sanitaire will get an extension, in addition to will DLP increase the visitors threshold.
Before Covid this was one of the busiest periods of the year as basically every European country has their Christmas school break. I would not advise it for a first visit, but if it's your only option: a busy Disney park is better than no Disney park?
If shows are allowed again, Mickey's Big Band and the Christmas parade are among the best entertainment DLP has.