Sword DLC worth it?

Let me preface this with the fact I've been binging the Switch games lately for the first time (Brilliand Diamond, and Sword).

Just finished Sword, and there feels like there is zero post game and legendaries to chase without the DLC.

Is it worth picking up the dlc for Sword when I pretty much have access to the majority of lengendaries on offer through BD anyway? Or should I just move on to play Legends Arceus?

Just feels like the only reason to pick up the Sword DLC is for the Galarian birds.