I mean, there's a lot going on here, contextually speaking.

If I made a comment saying "oh just write a quick bash script to change all the files to pngs" and someone commented saying "lots of people cannot write a bash script because they don't know bash", is that a useful comment?

It's in the context of health, which is what most relevant discussions regarding a disability would arise here. It's worth noting that the original comment "just do" also probably isn't very helpful to a discussion.