Wintersday merchants going away?
Assume that there will not be. If there happens to be a merchant, then it will be a pleasant surprise. If there is no merchant than nothing to worry about since you already assumed there would not be one.
There will probably be a lingering merchant for another week or so. He or she should collect leftover socks and shirts. That’s normal given past experiences with seasonal events.
But, as Zypher said, don’t assume it.
Gone to Reddit.