My main point with BlueSky was that many of the users there had gotten quite comfortable with what appeared to be their closed/private space, which, despite examples like yours, was relatively true compared to the norms of Twitter and Mastodon.

The point was that many over there seemed to like it, and, if a BlueSky competitor opened up today promising all the same stuff but closed/private with the ability to opt out and make something public, many would probably jump ship or demand the same from BlueSky.