Your post is rather misleading. The number of rotations removed is
per week, not per day, so a reduction of only around 8%, for just a few weeks in the winter, against what was offered on these routes during the summer period.
Also most of these seats were stripped out of the schedule a few weeks ago, so hardly hot news.
It's just the slack season rebalancing of capacity and demand which has been an annual feature since BE became the dominant operator here.