If you want to limit the discussion to people who happen to be following this subforum then fine, but you can’t then say “I don’t think the DWG want to get involved” (for completeness, it was me that created the forum thread https://forum.openstreetmap.org/viewtopic.php?id=57387 in the first place as a heads-up to local mappers).
There’s always going to be discussion about “quality vs quantity” in OSM (there are lots of ongoing discussions about that right now on various OSM lists and in forums and chats), but without specific examples of specific problems there’s not a lot we can do. Rants on the forum certainly give a feeling of the scale of the problem, but they’re not really actionable. Right now there are about a dozen actual reported issues in OSM in the DWG queue, where someone has said “X is wrong because Y”. DWG members can either deal with those in whatever free time presents itself, or they can trawl through forum (and mailing list, and help question, and chat) threads looking for potential issues. Please help us to help you.
Also, let’s not forget about the QA done by mappers around the world in places that aren’t local to that area. Examples include geometrical impossibilities, tag misspellings etc - see for example http://resultmaps.neis-one.org/osm-discussion-comments?uid=5314378 . Changeset discussion comments are very useful to people doing that as they often indicate whether a problem is already known about and whether it has been acknowledged by its author.