I'm not convinced. The flows are a little less convenient right now, but that's basically it.
Ex - I can absolutely get exactly this same rotation feature using open toolchains, they just haven't been nicely consolidated into a pretty package yet.
So to recreate the same thing adobe is doing here I currently have to:
1. Use the 3d-pack in comfy-ui to get stack orbit camera poses for my char (see: https://github.com/MrForExample/ComfyUI-3D-Pack scroll down to stack orbit in the readme)
2. Import those images back into the open source tool manually.
Is it as convenient? Nope - it requires a lot more setup and knowledge.
Is it hard to imagine this getting implemented in open source? Also nope. It's going to happen, it just won't be quite as quick.