Shawn Webb on Nostr: feld I think this isn't necessarily about user avatars. It's about uploaded media. ...

feld (nprofile…xyvy) I think this isn't necessarily about user avatars. It's about uploaded media.

From the article:

If the target has push notifications enabled (which it is by default), they don't even have to open the Signal conversation for their device to download the attachment. Once the push notification is sent to their device, it automatically downloads the image from Signal's CDN triggering the local datacenter to cache the response.