Frasyniuk got hold of enormous amounts of cash for a previous opposition activist in the early nineties which allowed him to start a big transport firm - how?
Nice try, but it's all explained here.
He came to the Polish after the fall of communism, he wanted to do business.
Pretty clear from the interview that he simply had connections that were willing to help him financially. It wouldn't have hurt him in the slightest to have been known as one of the genuine heroes of Solidarity.
as you probably know you can't buy Kaczyński
There are serious questions to be had about how he was able to enjoy a nomeklatura upbringing and even enter the path of becoming a public prosecutor. He isn't corrupt himself, but he certainly enjoyed an upbringing that wasn't obtainable by average Poles.
he was very outspoken against lustracja - maybe there is a reason for this
Maybe he simply understood that lustracja could only end in even more trouble for Polish society?