The rule says it causes more assisted shots and better shots...
true.
now read your sentence again.
see?
and better shots...you don't need many assists to have a good offensive flow.
the reason a team has excessive assists, or very few assists is depending on the fact that you have players with good passing or not.
If all or most of your player's passing skill is significantly lower then their shotskills, they will rather shoot then pass the ball. The opposite is also true, if the players have very good passing skills, but bad scoring skills, they will want to pass the ball rather then try to score, which leads to much much more assists.
Both cases aren't that good imo. I think the best situation is where your players can opt to shoot, but might give a good pass as well. this will happen when they have balance between their skills...
So, remember, a very high amount of assists isn't that good for your team!
They are not your friends; they dispise you. I am the only one you can count on. Trust me.