Whatever hiccups are going on with implementing communities, IMO, this has been the biggest positive change on the platform that I've seen. Something to assist in sorting topics of interest.

The tagging system was ridiculous and abused, people would just throw the tags up that they expected would get the best response, and nothing to do with the actual content.

This 'feature' is likely just a remnant from how tags were used.

Even though I still believe that the move was too little and far too late to stop the downward spiral of Steem.