To say Bitcoin is a scam is to say blockchain is a scam which is totally not true. because blockchain is far to real even to the world outside crypto currency. Even the world government wouldn't dare to think it is a scam seeing many of them see crypto as a threat to their their local currency.
To think bitcoin is a scam is quiet belittling. If Bitcoin could pull through all these years without coming off as a scam it wouldn't start now.