Simplify the following text for a Grade 7 native English-speaking person.
Original: Critics have claimed that the ESRB will only rate games AO if they have sexual content in them , no matter how much violence is present .
Simplified: Some critics come to believe that the ESRB only rates games AO if they have sex in them , regardless of how explicit the language , violence or even blood is . This also lead them to think the ESRB is not doing its job .