Why did some of the best stock traders think bitcoin was a scam.

Some of the most highly reparable and skilled stock traders called bitcoin scam for many years. The reason is they were attempting to use the same tools that faithfully serve them for many years trading stocks. They attempted to apply these tools to bitcoin. This was the equivalent of an old school american mechanic using standard wrenches to Work on a new metric engine. After stripping out many parts , they proclaim the engine is garbage. Never comprehending what they are looking at is something new and different. And the tools that they are use to don't work on it. But should they get a set of metric tools. Then things start to make sense to them. And only then they can see the value of the new engine..