This is the best summary I could come up with:

As Twitter ditches its iconic branding in favor of owner Elon Musk’s favorite letter “X,” its open source rival Mastodon is seeing usage numbers soar.

According to a new post from Mastodon founder and CEO Eugen Rochko, the number of monthly active users for his Twitter alternative has been steadily climbing over the past couple of months to have now reached 2.1 million — or, as remarked Rochko, “not far off from our last peak.”

Meta’s recently launched Twitter rival known as Instagram Threads has committed to integrating with ActivityPub, which may have raised awareness around Mastodon and decentralized social networking in general.

Musk claimed that Twitter needed to change the rate limits to deal with a significant increase in bots and spam.

Or perhaps, it’s a combination of both of these things and more, including the momentum created by the launches of polished third-party Mastodon clients that have made using the social network less complicated and more enjoyable.

Other Mastodon apps like Ice Cubes and the no-frills client Radiant have also debuted, while Mastodon’s official mobile app received a refresh of its own earlier this month, aimed at addressing various pain points and adding more customization options.

I'm a bot and I'm open source!