Why Taiwan uses large amphibious ships around the Spratlys

Why does Taiwan use landing platform docks to support its position in the Spratly Islands?

The large amphibious ships provide a visible status and presence asset, even where smaller vessels could perform routine support work.

Smaller vessels could handle many routine tasks around Taiwan's interests in the Spratly Islands. A landing platform dock has a different political function: it is a visible status asset that demonstrates reach and commitment. The choice therefore reflects naval presence as much as local transport efficiency.