The vast majority of Antarctic “glacier” is actually an ice pack covering open ocean.
Melting of ocean ice does not cause a proportional increase in the level of the oceans even if all of the ice melted completely in pretty much the same way the level of your Coke in a glass does not increase when the ice floating in the glass melts
A very substantial percentage of the Antarctic ice pack could melt with minimal change in ocean level
Nope.
While some lazy "jernalysts" may refer to them incorrectly, most (not all) articles do correctly identify glaciers. Much of the intermingling of terms occurs in the discussion/argument phase after a report is issued.
Ocean/pack ice is saltwater, melting has little effect on water levels. Glaciers are freshwater over land, melting does effect water levels.