I've wondered why he has been allowed to talk and still live?

Best guess...he has a rock solid insurance file. He said he was tortured to make sure he never revealed names. Now why would they do that instead of just killing him unless he had insurance/they knew it/so made it clear don't ever use it. Not like many have come forward and are still alive/those that knew well in advance to have an insurance file. Bernard being very smart would have done this early on. Some of the dead bankers might not have been as savvy/they are not all necessarily intelligent enough to think ahead.

So he starts lecturing...they go so what, only some will believe him and nothing the believers can do anyway might be their reasoning. Plus they might get some sick satisfaction that ppl know about them. The ones at the top we never even know their names. The ones we do know names of soros, rothchild, rockefeller, clintons etc are mere pawns and all pawns are expendable. They are the puppets of the puppeteers.