The crypto space is for everyone, especially when it has something to do with Bitcoin. Bitcoin don't really need adverts, because with what it has shown so far and the kind of trust it has built for itself one don't need to convince anyone to invest in to Bitcoin. However if you start convincing people to use Bitcoin it will look like a scam because that's what scammers actually does, they convince people to invest and they take their money from them.
Satoshi Nakamoto knows why the future of Bitcoin will become that's why he didn't try to convince anybody. Trying to convince people about Bitcoin might even reveal his identity.