That's normal because until now there are still people who viewed bitcoin like a HYIP.
Scammers are pretty smart on convincing people, maybe they'll start by saying, bitcoin when started was $1 and look at the price now, so that alone would already attract people with no enough knowledge about bitcoin but as usual later they'll regret and understand, and worst if they still failed to understand despite making a mistake by falling to the scams.
They are basically knowledgeable because as the time passes by, people are learning allot so they need to surpass the knowledge that the majority has to attract and scam people. It seems like they are more superior and trustworthy if it seems that they know allot about cryptocurrency. So, as a solution to this, we need to further expand our knowledge to somehow have the capability to detect them and to probably avoid them at any case.
I will take time before they will learn, let's just accept that that's the trend since its impossible that all of us will earn, but eventually the market will mature due to people are getting more educated.
For them to learn their lesson, we need to turn scam occurrence to nearly 0 percentage where they could not earn even a single penny by scamming people and this could be achieved by utilizing tools we have now, mainly built for security. And lastly, considering to be personally responsible for the decisions that we make especially when talking to people we didn't know.