There is no 'atheist model.' There is politics and ideology, The far left, the far right and those who fall somewhere between.
Believing in God is no guarantee of good behaviour, far from it in fact.
You can substitute "model" with "outcome" if you would prefer.
Outcome being determined by intention and purpose.... if atheism plays little or no part in what are political and ideological decisions and actions, atheism cannot be blamed for the outcome of these actions.
The political decisions come about by what politicians think will get them the most votes. If a large part of the population are atheists, then those decisions that favor atheists will be made by the politicians.
