No, but their data allows filmmakers to gain a better idea of what the consequences of certain decisions are likely to be. It's not so much as allowing algorithms to dictate creative decisions as it is enabling those decisions to be better informed. As for targeting film festivals in particular, I've no doubt that Netflix has sufficient data to look at sort of festival-goers (and those like them) in particular. While it can't provide a guaranteed formula for festival success, it should still give a filmmaker another tool that helps them do their work.