LOL!
Of course not! However, let’s picture it with a concrete example: suppose that you’re trying to get your 30-year-old child to do something that they’re not inclined to do, because you know it’s the right thing to do. So, you reason with them – you explain how the thing they want to do hurts others, and how, if they are really concerned with justice for all people, they’ll reconsider their course of action. You’ll lay the whole case out for them, trusting that, in their maturity and ability to reason, they’ll do what’s right purely because it’s right.
On the other hand, suppose that you’re trying to get your 3-year-old to do something that they’re not inclined to do. Do you take the same approach as with a 30-year-old? Of course not. You match your approach to their situation in life.
Does this mean that your actions with the 3-year-old are based on ‘pressure’? Of course not. Rather, they’re based on your assessment of their ability to handle a particular approach. The more nuanced approach doesn’t have a snowball’s chance of resonating with them, so you take an approach more appropriate to their context and state in life.
Does that mean that, if you threaten the 3-year-old with a time out, you’re being unjust or sacrificing your own personal sense of justice? Of course not!
Same deal here. God isn’t being unjust in the OT; rather, He’s working with people where they are, and not requiring of them a maturity that they’re unable to attain to at the moment.