Yeah, just like they don't completely understand being homeless. That doesn't mean you can't simplify the concept for them to at least have a very basic understanding of it. Plus what "agenda" are we worried about, awareness of homelessness?
I'm not not necessarily saying this homeless thing is an agenda, but I could easily see it being spun as a "feel bad for them so that you help them" socialistic spin. I'm also not going to say it isn't without agenda without seeing it. Sesame Street has had agendas in episodes in the past.