It's still a huge known unknown for Bitcoin. What is Satoshi was linked to a shady organization, or something the general public wouldn't want to support for instance? Imagine if Satoshi turned out to be an avatar for the American, Russian or Chinese government for instance, that would both give them a huge leverage on the blockchain and mean that they'd benefit hugely from widespread adoption of the cryptocurrency.

In turn that could motivate other governments to heavily regulate bitcoin as they'd see it as a foreign-controlled currency.

That's just fiction, but that's the point, nobody knows for sure who or what Satoshi Nakamoto is, and that's a risk.