This feels like exactly what it is, which is extended YouTube shorts stretched into a 90 minute narrative.
I did initially come away with some positive thoughts, but upon reflection, the mockumentary gimmick just doesn't work for me. I respect the effort, but it feels like it's trying too hard to be quirky and individual, with moments of emotion and wisdom that just didn't engage me.
What did work for me was the charm of Marcel as a character, the voice acting, the animation and much of the humour.