They're pretty worth it yeah, more than the SWSH DLC.
The new characters are really compelling, and there's a lot of QoL they bring.
And, in the Indigo Disk section, you can actually control your own mon and fly/run/swim across the map. The only downside being if your'e too far from your own trainer as a pokémon, you can't catch a shiny mon if you encounter it...