That's more or less where I'm at too. I do have to recognise some personal bias though. Partly because I don't know that much about the Indus Valley Civilisation. Partly because for some reason I find it quite frustrating to not have a "proper" name for a society when talking about them, even though I completely understand on a rational level that we just don't have enough information to know what they called themselves

Still, I totally understand how someone could become fascinated by this society in particular. We have so much evidence but never quite enough for solid answers in so many cases. It's a tantalising mystery