I haven't tried any of these demos, but I'm not surprised they stop impressing once you go deep.
What got be mostly impressed were the demos of Astra doing computer use. At my job I do some RPA and can appreciate how challenging it can be. Yet they make it look extremely easy to operate a tool like Blender at super human speeds.
I've been using Blender via Astra (and Sol before they) without any UI automation at all - Blender supports writing and executing Python scripts, here's how I'm doing that: https://til.simonwillison.net/llms/blender-coding-agents-mac...
I'd be surprised if any of the impressive Blender demos doing the rounds at the moment were built by having an agent control the mouse and keyboard against the Blender application.