Because it's not Bitcoin. As far as I can tell, this is the number one piece of evidence that a cryptocurrency is a scam. I've been following Ethereum almost entirely because I'm a developer and I'm interested in using the technology for projects, and I can tell you the atmosphere is maddening. I'm accustom to welcoming communities that care about the tech, not cynical communities that care about pushing their particular interests because they have investments. The cryptocurrency space is awful and polluted with unhelpful attitudes but the tech is too important to be pushed aside for that reason.

Ignore the FUD, Ethereum is not a scam. It's actual open source software with multiple popular implementations successfully delivered from a toxic environment with an impressive level of care toward getting the technical aspects right while being as transparent as possible. It's not perfect, about as perfect as any startup I've watched. Don't dump money into anything you don't understand.

EDIT- just as an illustration, I think it's interesting to use the Bitcoin Talk forum search tool. There are 464,000 results for "scam" and 484,000 results for "currency". Spend 5 seconds on the forum to find the word used like it's the coolest slang around. Everything is a scam, because evidence.