These tools/procedures are widely used for other reasons including at border crossings. They get training to use it. Law enforcement also often uses them illegally for unjustified search and seizure targeting those who have done nothing beyond crossing a border or journalism. The people using tools from Cellebrite or competitors are often the ones breaking the law or using them for criminal reasons. Many of the people using these tools are in fact criminals breaking the actual laws of the land.

Even if they say it's only for certain governments and law enforcement clients, it doesn't stop them getting out. There are likely militias in the world using this. If we can get documentation, someone far more powerful could get the software too.