Paper mentions Thwaites glacier but does not mention the subsea volcanoes contributing to ice loss in the West Antarctic: https://www.livescience.com/46194-volcanoes-melt-antarctic-g...
Antarctica as a whole has seen a slight increase in ice over the last 40 years, with record extent being achieved as recently as 2014:
As a lay person I find it really hard to understand the significance of this single days temperature reading. It sounds alarming but I have no idea how to view that single data point. I wish they'd go into more detail in explaining that in these sorts of articles.