Yes, very dangerous, people think we have a lot of money. Robbers are dangerous in my place, A lot of people got killed because of money. Some traders even hide their real idedntity in social media.
If you were being secretive about trading, then I don't think you should ever use social media and publish your story.
Traders that I know use social media are those who either run a private group or just love sharing ideas to others. If you just want to learn or follow them, use Twitter. No need to make an account.
I don't tell them exactly and specifically my activities involving cryptocurrency. I just tell them that I'm doing an online job because I don't want to explain things further.
I do the same thing, and part of it was true. My full-time job is online freelancing, writing, design etc, so 'making money online' is definitely spot on.