[al2o3cr]

    I understands Object Oriented correctly and knows
    where to use it and how and when to avoid it

Literally nobody "knows" this for every case, there's not a right answer: OO is a philosophy not an instruction manual. "Good programmers" accept there's ambiguity.

[seti0Cha]

My interpretation of OP's comment was that they were saying something pretty similar to what you are saying. That is to say, knowing where to use it and how and when to avoid it is an acknowledgment of that ambiguity. Maybe you mean that nobody can claim to know where to use it? Also, why did you put good programmers in quotes. Do you not believe there is such a thing?