this is sort missing the forest for the trees though....the importance here isn't the "stablecoins" (even though that may be its most used aspect). This is about arbitrary assets on LN.
Purchase a ticket to a movie?...delivered over LN. Earning your frequent flier miles?....delivered as AirPoints over LN. Own 10 shares of Intel?....delivered over LN.
This turns LN into the default network for all types of transactions.