Given this is now released, I'm happy to report that the third-party control client for the Elgato Streamdeck, called OpenDeck, is now a lot more accessible for #screenReader and keyboard-only users.
These devices have always had a huge #accessibility barrier in that the only way to assign an action to a key was through a drag-and-drop interface. Elgato has been notified about this, but proved ... let's say ... less than ehtusiastic to fix it. So, I did.

While I can't claim 100% accessibility, primarily because that isn't a thing, I can say I made sure everything I could find was labeled, and that there's now a keyboard-only way of associating buttons, knobs, and touch controls with actions, something the official client does not, and probably will not, support.

I'll be making a video on the ViewpointUnseen youtube channel with all the details soon.

https://github.com/nekename/opendeck

@zersiax My friend praised you a lot, he called me just to talk about OpenDeck. There are some issues related to sighted people (he has tinny-tiny remainder of sight), for example, in the original elgato app you can choose icons that would be shown on the Elgato buttons. So maybe he'll open some issues, maybe not. I told him I could help you, but I have no StreamDeck myself yet.