I don't think this the place for OS "wars". If you're a Linux user you probably get annoyed from time-to-time by being told you have to have Windows to run certain software. Well, it's the same for a Windows user being told they have to run Linux to make something work that should work just as well in Windows (in fact it's worse, because a Windows user would have a harder time getting used to Linux).
Pianoteq supports all major desktop OS', including Linux, and Modartt should be commended for that. The whole point of this broad support is so users are not inconvenienced and can use Pianoteq on any platform they damn well like.
@OP, sure if you _want_ to give it a go in Linux, go for it, but that's totally up to you and by no means necessary.
3/2 = 5