Bluesky asks what my interests are. I said software engineering, science and tech. Bluesky showed a lot of posts of cool space photos.
X asks me to follow an account from a list. I chose NASA. Out of curiosity I checked out the "For you" tab on this brand new account. I did not get recommended space photos. X pushed a lot of political posts, some bordering on hate speech (one used the n-word).
I don't quite know what explains the differences between the new-account experiences, but I had a much better time on Bluesky. I don't know if this will last, or if Bluesky is destined to follow in Twitter's footsteps once more people start joining, but I think right now Bluesky is in a good spot.