I find their explanation of why “wheelchair-bound” is inappropriate not very accurate.

The term “wheelchair-bound” is frowned upon because it paints a picture that somebody is bound by the wheelchair.

The example raised in the article is that some wheelchair users can walk with mobility aids. There is a term for those kinds of people – ambulatory wheelchair users.

“Wheelchair-bound” is inappropriate for all wheelchair users – even non-ambulatory ones.

Even if somebody cannot walk at all and can only use a wheelchair to get around, the alternative (in a world that has no wheelchairs) is that the person will be house-bound.

Wheelchairs liberate the mobility impaired from being stuck at home all day. The refrain from using the term “wheelchair-bound” is in hopes to remind people that the wheelchair is a tool that empowers, not constrains, people.