One of the examples you gave was receiving poor advice. I'm not so sure that if I received poor advice in Canada I'd flee back to my country to face persecution, but I'll accept your answer.
You've given a couple of reasons why people voluntarily withdraw or abandon their claims. But we're seeing it in droves, where 95% of people coming from the European Union, for example, either abandon or withdraw their claims, don't show up for the first hearing, or their claims are actually rejected.
If they're returning and voluntarily pulling out their claims, is that not an admission that they're not really in fear of persecution in their own countries? I can't imagine, if I were in a situation where I had to flee my country, that I would ever want to go back.
Do you not think that's an admission that they're possibly not being persecuted, as they originally claimed?