Because that pack is put together without the consent of developers who have worked on those plans, repaints and models....that us why it is pirated software. While everything in this crap package is freeware, that does not mean the original developers lose their rights on how their work is distributed. Ask PAI
, Aardvark and the other modelers who created the aircraft if they gave their approval for this moron to use their models. Ask the repainters who worked hard if they gave their approval. Ask the flight planners about this. If it includes AFCADS, ask the developers of those. Is there any airport scenery upgrades in it, if so, ask the developers of those airports. The answer will be the same, no. This is no different than the piracy of downloading mp3s, movies, games, apps and so on.