Gerard,
this is getting very off-topic and we should move it somewhere else if
we want to continue the discussion :-). We should probably discuss
this privately at some point because I'm not sure what cases of
Commons users acting arrogantly in the way you describe it you're
referring to. Perhaps we should organize a cross-project meeting
between Commons users and those of other wikis, so that people can
express and share their concerns openly.
Erik