The reader includes extensions that allow you to download manga from various unofficial sources. So their justification is that it facilitates piracy. It's still the best manga reader (imo), but there's dozens of other options for local media without that feature. There's no world in which I buy physical manga or subscribe to 12 different services to get access to the ones I want to read, so I don't know how much the company is 'winning' with this move.