What is your definition of LQ? Because if it's a comparison to how other forums use groups, you're comparing apples and oranges.
The groups here are not meant to give you any sort of special status like they would on other forums, they're here as social groups, where anyone can create their own group to discuss a topic that they like. Although I do agree that I need to cut back on the unused groups and groups that obviously exist for the sole purpose of having a pretty colour.
I'll be pruning groups and raising the requirements for creating one shortly (but I'll also be letting users ask me whether they can bypass the requirements if their idea for a group is good enough).