No, they are not traditional shadow puppets. According to the wiki you linked, "Reiniger pioneered silhouette animation" where "shadow-play-like puppets are filmed frame-by-frame"

They are similar in visual style but different in form and method.

> In the 1910s, the German animator Lotte Reiniger pioneered silhouette animation as a format, whereby shadow-play-like puppets are filmed frame-by-frame.

https://en.wikipedia.org/wiki/Shadow_play#Shadow_puppetry_to...