If Mastodon is too much of a lift in the near term (social network effects are admittedly hard and humans are tricky), Threads is an option for a Fediverse-compatible managed solution.
If a normie can sign up for a Twitter account they can sign up for mastodon. It's not difficult.
The problem is more marketing. The commercials have the ability to spend money where mastodon has to rely on enthusiasts' word of mouth. They simply lack the reach to the normie community.