I think these atypical viewing orders can be super fun for fans already familiar with Star Wars and can re-contextualize the stories in interesting ways. For the first time viewer though, release order is the only way to go.
The Star Wars prequels rely 100% on the viewer’s existing knowledge of Ep. IV, V & VI. There are so many things in the prequel movies that make absolutely no sense at all without having seen the OT.