There weren’t a whole lot of new characters with what Kenner used to call toyetic qualities. Other toy lines are slumping, so it’s not just Star Wars. All the clickbait articles I’ve seen thus far have been pushing the same TLJ was a flop crap and pointing at toy sales as proof.
When you see six year-olds with their faces buried in the digital devices in their hands already, who’s left that wants to play with action figures these days?