Doesn't matter though, they are still not breaking the law.
There are a lot of factors involved in those numbers. For starters, immigration court does not provide public defenders. If you can't afford a lawyer, and can't find a lawyer willing to work pro bono, you have to represent yourself. Yes, even if you are a minor. And having an attorney, according to your article, makes it 5x more likely for your claim to be accepted.
There's also the fact that standards for being granted asylum can be arbitrary and not subject to proper review. Immigration judges work for the DOJ, not the judicial system, and are appointed by the Attorney General. The Attorney General also has fairly broad powers to increase the burden of proof for asylum cases, and limiting the circumstances in which an asylum claim is valid. The AG can also directly override the decisions of judges and deny asylum. For example: https://www.nbcnews.com/politics/immigration/ag-barr-using-u...