Devs, Stick to your guns or remove Viera all together.

[Yencat]

oh they did?
the only thing i remember them saying we‘ll learn more about their lore, story and other details in the future (from the fanfest)

I've been trying to find it but it's a nightmare trying to find a specific interview with how many they do for different websites in different languages, something about how the current events would seem like a good reason for them to show up but it wasn't intentionally planned that way and since they're still rare we wouldn't meet many, if any, as NPC's or in settlements?

If what you say is what they said at fan fest though I might be misremembering because that's completely contradictory, and since I can't find a source you should probably take it with a huge grain of salt.