Unpopular opinion:

Nostr is more advanced than Bitcoin.

There is no obvious reason why Bitcoin The Protocol should only be implemented in one Bitcoin Core software package.

There could be n number of software packages that work exactly the same. So long as their input and output match up, the throughput shouldn't matter.

You could simply write a Bitcoin Core test, and run it over any package, to see if it's compatible. Tests are dynamic specifications that leave the implementation open.