And if the lists are just fronts for relays, you can just subscribe to the relays and turn those on-and-off.

One big benefit: relay content isn't directly an event, so it has no particular length. A relay can have n npubs listed. And relays can use logic. Curating a data set server-side is much more persistent and performant. And every person or group of persons can have a relay, even if their relay is just an aggregator of other relays and some DVM subscriptions running once per day, for 10 sats a pop, or something.

Then your relay only contains stuff you actually want to see and you can just look at the stream. No more downloading obscenity and spam, to your device, and then hiding it in the client.

Look at all of the pictures.