The Purely Selfish Person would Never Criticize anyone Else

To criticize others less, become more selfish:

A thought:

We are taught that it is bad to criticize others. But when do we criticize others? When we are overly concerned with the way others act, think, and behave (contrary to our own self-beliefs).

But if you were purely selfish and self focused, you would never criticize or even pay attention to others.

Therefore the thought:

If our desire is to NOT criticize others, perhaps we must become more selfish?