When someone is considering creating a group, that someone will probably want to look over all the existing groups to see if one of them might be the right place to go instead. But the site only shows six groups per page, and there are already three pages. The more pages this someone has to flip through, the greater the likelihood that someone's patience will run out. And even the most diligent someone will stand a greater chance of missing a page, or missing something as pages keep flipping up.
Moreover, if a someone is trying to find the most appropriate group, that person might stumble on one first and stop looking.
Whatever advantage that groups may have is lost if people can't find the right one and end up creating duplicates.
If you look at, say, Digikey.com, Mouser.com, or Newark.com, when they put up a multipage list of parts they allow you to select a few to display together. This would be a lot of work and I wouldn't ask for it, but the need is reduced or obviated if the someone can see everything on one page, or a few pages at most. (Sort on most used in the last 30 days?) These vendors don't do this for theory. They do it get and keep customers. (And I can ask for 250 items on one page, or everything in a single download.)
