If you go by numbers alone then I'd say somewhere around 99.99% of them are scams. If you go by market cap then I would lower that number to only like 95%.

I think an unflinching belief in crypto in the face of so many scams is the consequence of having a good percentage of your wealth tied up in it. Even if the person himself was scammed, it would be in his interest to not admit it in the hopes that he can pass the bag on to some other greater fool.