Lineage is noteworthy but it isn't a 100% guarantee. I can easily trace my lineage to Funakoshi himself but I still got taught to move in straight lines and block kicks with Gedan Barai. I think the fact that the Japanese added so much Kendo flavor to Shotokan is also to blame. Then nobody really questioned it when Karate came to Europe and the US. And now you have WKF style training which looks nothing like the Okinawan original art.