So it turns out the geniuses over at Bluesky trust the client app to fetch, and honestly report, webpage metadata for preview cards, so with a little tinkering in the debug tools you can post whatever news stories you like and they look exactly the same as real ones.
@andrewt This is why Mastodon has the collective DDoS orbital death laser, because every instance does this individually on the server when a link rolls in. Would be nice if there were a happy medium for this
@lmorchard I mean there is, though, if you're BlueSky, because BlueSky is not in fact decentralised, so they could just fetch the image themselves instead of letting me do it
@andrewt Yeah, that's true, they can avoid being a thundering herd if they're just one critter
This is what I like about it here, we admit we are not perfect, and could do things better. Is the discourse forum still up to discuss issues around activity pub / Fediverse, I am sure I was signed up at some point, but not sure what the website is.