Yes, because it sits on the coast, water is the most important factor in erosion here.

Yes, wind is a major factor.

Yes, it is not evident that ice was a factor during the time period shown here (July), but since the video is taken in Alaska, it is safe to assume that ice has some degree of influence on the erosion in this area.

Yes, gravity is a factor in this erosion. Notice how the land began to sink and fall over a few weeks.

Yes, all of these are factors in the coastal erosion in this video.