That is all doable with Huggin/IFTTT/Automate/Tasker/Snowboy.
It could even be done on the phone itself, although battery life and heat would likely be a problem.
The fact that it doesn't work just shows that Google isn't that interested in their Assistant.
Which is rather strange, but maybe they're looking for better ways to monetize it?
Or maybe it's going the way of Reader once AR gains momentum or something... then again Google Lens is a really nice product and no one I know even heard of it.
I'm amazed at how well it can recognize any kind of writing, even my chicken scratch, and how it can look up any products/labels with decent results.