You are right that for able bodied people it's at best a gimmick. But it might be useful for people with limited mobility, who don't want to depend on other people washing them.

Gimmick? Maybe, I’d love to try something like this.It may not save time, but i bet it feels glorious.

Safely getting into and out of it looks very challenging for people with limited mobility.

But the article's final photo is of completely different model - far more accessible, far safer, and for "the health care sector".