Whatever you call it the ultimate result is similar
When many people believe it is a scam then it probably is.
I doubt many people believe that bitcoin is a scam. Maybe a 'bubble', but not a scam.
For it to be able to be called a scam, Satoshi has to dump all his BTC someday and crash the market, and the market never recovers since then. But in my opinion, the fate of BTC now is out of anyone's control. Even Satoshi can only temporarily crash the market, by dumping all his BTC. I don't see there's any incentive for him to do something like this.
Moreover, I don't believe Satoshi could foresee BTC could reach $200 someday when he invented it. If it was a scam, he would've dumped a large part of his holding during the 2011 crash.
