He is not suing anyone. Not everything involves someone getting sued. No-one is getting sued here.
Why else would you need amnesty? Why else would he be extending "amnesty" only until a certain date? Which, by the way, is not amnesty. It's a grace period. Hope this helps.
call it what you will, just a gesture to remove any doubt people might have over possible infringement. copyright rules can also vary internationally. I just set an arbitrary date. I will most likely extend it on a rolling basis after that date. there are no plans to sue anyone!