There was no one like a Kevin Feige (let alone a George Lucas or Dave Filoni) in charge there making sure that there was at least some loose connection to the existing lore and proper continuity. At least “Solo: A Star Wars Story” had that going for it.
I mean, I'm not sure what continuity issues you have in TLJ; TFA's continuity issues are minimal. It's mostly Rogue One, Solo, and ROS that actually have lore/continuity problems.