@thomasfuchs I am not (by choice) but I've done a fair amount of research and have observed other folks’ experiences. There are certainly things BlueSky excels at—UX and search being the two primary areas I've seen—but beyond that, it sounds to be a shallow experience.
And honestly, just on principle alone, it's not for me. I've been doing web dev long enough to know that “we're a VC funded company with an OSS product" smell, and where it usually leads. Recent example, Google/Chromium/JPEG-XL