Is it though? It's not as if it can pull in hypothetical superfamilies like Nostratic. It's not saying it's a family tree of all languages, just I-E. Your assumption is that somebody would look at it and forget that Mandarin exists, or Arabic, or Finnish, &c. I don't buy that. Hence my fruit joke. I'm not sure exactly what you expect them to do to avoid an egregious misreading by somebody spectacularly smoothbrained, because anyone with that mentality isn't going to be paying attention anyway.

[Removed my Anatolian criticism: I just hadn't zoomed in enough!]