Seems like an interesting effort. A developer is building an alternative Java-based backend to Lemmy’s Rust-based one, with the goal of building in a handful of different features. The dev is looking at using this compatibility to migrate their instance over to the new platform, while allowing the community to use their apps of choice.
If you are a Java shop, and you do tomcat, then cool, maybe you’ve worked out the mysteries if Java deployment and managing resources (ahem, memory), and upgrades etc over the life cycle of a project. But most people doing deployment don’t want a one off Java app as a snowflake in their intra, if they can help it because it requires more buy into the ecosystem than you want