Everyone. Stop with the misinformation.
6.x DBC, map and vmap extractors are working (at least for the enUS and enGB locales).
What is not working (yet) is updating the DBC structs server side (it's still expecting 4.3.4 dbcs in some cases). DBC updates to 6.x are being worked on (e.g https://github.com/TrinityCore/TrinityCore/pull/13508).
Calm down and stop trying to run the 6.x branch if you have absolutely no idea of what is happening.