Going through poster's submissions and comments on https://news.ycombinator.com/user?id=actinium226 seems like a lot of backstory just to plant a story that would do just fine as a ShowHN is they're actively involved with chara chorder, so I doubt it's a plant.

I did see in my research of this product and company that their marketing claims/practices are questionable sometimes.

I have a charachorder. It's similar to music theory where you can hit individual notes to make up a chord. With chording you hit multiple keys usually that are part of a larger word and it outputs the associated word. This means instead of having to hit every individual key in sequence to type out a phrase one character at a time, you hit multiple keys at once to output words at a time. In the time it takes to output a single character on a keyboard someone on a charachorder did the entire word already. The longer the word the more speed is gained from this. It takes a lot of time to learn though, like a solid month of practice just to get near speeds I have with normal keyboard. Significantly helps with hand strain from typing all day due to requiring far less hand movement.