It has already happened with Artemis last year. It will continue happening but it’s how FOSS works.
Luckily there are other apps available, and the developer of Raccoon always said his project was experimental and did not intend to replace any of the more well established apps.
One of his mottos was “when im doubt, look at Jerboa for Lemmy”.
In the second to last paragraph he states there are two possible ways to continue: either some of the forks continues the job, or he will re-publish the app with a different account (and package name).
The community seems to have chosen the first one, and he will probably respect this decision. Good luck to the forks!