Technology

I possibly disagree — I'm a part time wheelchair user (as well as other disability related devices/aids) and I'm always fascinated by how dynamic and relative the concept of "accessibility" is, even if we're only considering the perspective of one person. For example, for me, using my wheelchair often means trading one kind of pain for another, and depending on specific circumstances, that might not be worth it. Being disabled often forces you to get creative in hacking together many different solutions, balancing the tradeoffs such that the "cost" of using one tool is accounted for by the benefits of another. I wish I could recall some specific examples to share with you, but I have seen friends be incredibly inventive in using regular items in a context that makes them into accessibility devices, if that makes sense.

This is all to say that expensive hardware, learning curves, unpleasant tradeoffs like friction of wearing — all of these things are core to my experience of most accessibility devices I've ever used. For any prospective accessibility device, the key question is "given the various costs and inconveniences, are the benefits of this thing worth it?". Even without knowing much about this specific device, I would wager that for some disabled people, it absolutely would be net helpful.

That being said, you raise a good point, in that "accessibility" is often used as marketing hype, and in its worst form, this looks like disabled people's experiences being exploited to develop and sell a product that doesn't actually care about being accessible, so long as it has the appearance of such for investors. I'm not saying that's what this product is doing, but certainly I am primed to be wary of stuff like this.

Even besides the exploitative instances that I allude to, you're right to draw attention to existing products on the market. It's possible that some disabled people struggle to make use of devices that would be "good enough" for most (and maybe these people are who this new device is aimed at helping), but with accessibility stuff, it's far too easy for well-meaning people to jump to making new gadgets or tools, instead of meaningfully examining why the existing "good enough" solutions are inaccessible for some. A specific example that's coming to mind is someone I met who had a super high tech prosthetic limb that was so hilariously impractical compared to her existing options that this new one literally never got used. She said that it's a shame that such an expensive bit of kit is made functionally useless by much more basic designs, but she's learned that excited engineers are rarely receptive to being told about the practical problems with their new devices.

TL;DR: i think your instinct to be cautious about invoking accessibility is wise, though my own caution comes from a different context

Edit: I watched the video and I feel less dubious of this device after learning that this particular project arose following an email from someone who was mute and would find something like this useful. It helps that CharaChorder's chording keyboards are established (albeit super niche) products, and this project is less about a fancy new device, and more like "chording keyboards like ours allows for faster typing than any other method, with training. Maybe this means it could be an effective text-to-speech input method. Let's find out".