As a modestly funded project, Mastodon is never going to achieve "hockey stick" growth, and it would probably be overwhelmed if this happened. It's better for them to pursue a strategy of gradual, steady growth. Mastodon is continuing to grow steadily, and it does so in the face of established players who can outspend and outrun them. 2 million users is pretty damn good for an open source project that doesn't have a marketing budget to speak of.

In addition, it's time to drop the notion that every platform has to serve every type of user. As demonstrated by the problems facing Twitter, it is probably better to have many different platforms serving different audiences. Mass media inevitably reaches for the lowest common denominator.