Clans are basically just a group of friends who build together.
You're just looking at it bad because of the name "clan" attached to it. I'm sure if you and your friends made collab builds
from time to time, you wouldn't be complaining about it even though you would be technically "inactive" as a building group (see bolded part).
It's not like because you're in a "clan" that you have nothing to do in real life and can produce things 24/7. People have overlapping schedules which makes it difficult to all be on and building at the same time.
http://forum.blockland.us/index.php?topic=226631.0http://forum.blockland.us/index.php?topic=217274.0http://forum.blockland.us/index.php?topic=223812.0http://forum.blockland.us/index.php?topic=169286.0Best building clans in BL as of right now. It's pretty obvious that you don't visit this section of the forums often/care to look around and are basing your opinions off of idiots you see on servers with clan tags.
It's common sense not to join a clan named "Awesome Alliance of Blockland"; you know they wont do jack stuff.
Also, you're looking at things from the outside. Just because the members don't post every hour in the clan topic doesn't mean that they are inactive. Most clans talk at least 3-4 times as much in-game through RTB. Topics are just a way of organizing the information.
Clans don't affect you in any way. It's not like you're forced to join one; if you want to join one, do so, if you don't, don't. You act like seeing 4 letters in front of someone's name or having a section dedicated to clans is a crime.