You only need a full DB if you want to fully delink your artifact. You can just clean up the subset you're interested in exporting (the fully populated disclaimer is just there because there's a lot you can get away with, as long as you know precisely what you are doing).

Even then, a full DB is quite achievable, even on large projects. The biggest public project using ghidra-delinker-extension out there is the FUEL decompilation: https://github.com/widberg/FUELDecompilation

The executable is 7 MiB, has over 30,000 functions and has more than 250,000 relocations spots. The user made the game relocatable in six weeks (with four of them debugging issues with my extension). They then managed to replace code in spite of the fact that the artifact was built with LTO by binary patching __usercall into MSVC.

There's a write-up about all of that that is well worth a read: https://github.com/widberg/fmtk/wiki/Decompilation

I've also had one user manage to fully delink the original Halo on the Xbox in one week. To be fair, they were completely nerd-sniped and worked non-stop on it, but it still counts.