Yeah, heard about some of them and read a few. Some worked, others I thought were so convoluted that I think they should've just said "not canon" and been done with it. (Case in point, like how in Legends, they tried to cobble together the different accounts of who stole the Death Star plans into one "they all had parts of it" mess, while canon just said: "here's what happened, the other stories aren't the "real" versions.")
We have had years for the other movies to build up their lines and all that. In any event, say TLJ did have a weaker toy line; it could happen and I doubt it's going to affect the movie's status long-term.