We (East River Source Control) don't run Jujutsu, it does not "belong" to us -- it is a community project! Nothing has or is changed. Most of the contributors have nothing to do with us/Google/whoever. We get tons of great contributions from highly experienced and talented individuals. It's healthy, check it out: https://github.com/jj-vcs/jj/commits/main/

Most of the maintainer stuff is also overhyped in a way (OSS maintainer-heads know this). The maintainer group is largely structured to just keep things moving; not really a privilege but a responsibility -- making sure things get merged, doing technical reviews, ensure builds are unstuck, and hitting the green approval button. Our own community members also do code review, find bugs, triage things, answer questions, design features, help get users unstuck, etc. We are very much not alone, and I have great confidence in the constitution and strength of the community itself as someone who has been around the block a few times.

This is going to sound silly and "guy approves of himself" adjacent, but I've been doing OSS maintainer stuff for like 2 decades at this point, and jj is truly a gem as a project. It is vibrant, and the community is generally speaking insanely talented (huge number of git powerusers), and we have a weird dogfood advantage where people use the tool to contribute right back to it. Martin did an awesome job setting the tone of the project just through his behavior before many of us joined years ago. He's a naturally good project lead.

As I said elsewhere: I work for ERSC and I am a Jujutsu maintainer. This is just me speaking candidly on my own behalf.