I mean yes true but no one would justify migrating the code it’d be so expensive.
Dagger was very nice for the newer services and the ones that used straight rx were like less hell
You might want to check out Quarkus, Mirconaut, or Helidon MP. They do build time DI, and are more focused on performance and reduced resource usage. They are similar enough to Spring, and I believe Quarkus and Micronaut have an optional Spring compatibility layer that one can use. LLMs could help with migration if the codebase is well written.