I don't think its so much the dummy, rather the fact that the kid watches TV/tablet/phone all day, she is clearly not communicating with him, or engage in any kind of play that would aim his development and speech. That would require her to get off her fat ass, and, as we know, that is a no go with dear Yeti. As someone said above Id definitely be a bit more concerned about the fact that Le' arthritis doesn't smile, laugh or keep eye contact. I'm no doctor either but autism definitely spring to mind