EDIT: I apparently fell for a fake news Lemmy community. Its explained in the sidebar. I gave the OP the benefit of the doubt that they couldn't link the real new story, but trusted the attribution to APNEWS. If you enjoy participating in OPs social experiment on posters you're in the right place. I'm not, so I'm out.
I'll be the first to say this could go very wrong, but for someone that is already homeless, this might be a step up. Employment usually requires the ability to sleep in a secure location consistently. Next would be bathing facilities I would guess. We don't know if bathing areas are included, but some employers I've seen it. I would imagine it would be difficult for a homeless person to work a job at Walmart without these two things, but if this checks the box allowing them to gain employment, it could be a critical step up from them to get their own housing outside of this Walmart pilot.