Onboarding to Mastodon is actually identical to BS/Threads now. They’ve made huge improvements. It’s a shame that most of the news media’s experience discovering Mastodon for the first time was in Oct '22 because it’s left a bit of a “techie” aura around the whole thing they’re still trying to shake off. If Mastodon was then where it is now, I don’t even think BS or Threads would try to compete.