An important thing to clarify on the newly formed Mastodon 501(c)(3) entity: it's not here to make or influence product decisions. It has no legal ability to enforce any such changes. Primary operations will remain led by the Germany-based Mastodon gGmbH, and this won’t change.
The focus of the U.S entity is to provide another vehicle for donations and other forms of support. The Board has no legal "control" beyond this.