Flow is good filmmaking expressed through low-tech production, which is totally valid, but it doing a lot with a little isn't going to stop Disney from one-upping themselves with the next Zootopia movie so Blender needs to handle that angle too if it's going to become a catch-all solution for all kinds of production.
For sure, it was made by a small team and rendered on a single computer using the Eevee renderer (the fast partially-rasterization one). It's a major project, just not an enormously huge bleeding edge major project. Here's hoping Blender can keep on rolling toward those types of capabilities.
