This movie was released before I was born. The first 10 minutes is super interesting in context with the change of times, from a japanese perspective. Internalization , early technology (pilot lighter) , disco culture and many more.
I started watching lupin in asian dub around 1996-1998 (I can't remember, and there is no internet info when it started in my country). The station in my country cut an episode into 2 or 4 parts (each airing exact 30 minutes padded by ads) and potentially censoring sexy/ecchi or violent+ (say torture) parts.
I'm surprised I didn't find it boring, but the looney-toons and inspector gadget (and/or james bond) esque style of depicting impossible scenes is not my taste.
Overall an interesting pickup for Lupin fans.