All you need to do is ensure you have a backed up copy of your Kindle purchases on a PC out of reach of Whispernet. The "1984" thing was a one-off; anyone with a back-up was fine.
The "1984" thing was also a breakdown in understanding of geography and copyright. George Orwell's books are public domain in many places, including Canada and Australia; but not in the US. The PD vendor in this case had "rights" to sell the title -- but not in the US. When the US rights holder -- fully protected as the title in the US is NOT public domain, Amazon took steps to "correct" the problem. It ended in a public relations fiasco. But no one who wants the e-book today is denied a copy.