They're worried about their safety they don't want to be kidnapped or pay ransom to ppl who're holding their families. Most of the responsibility for crypto crime can't be on social media companies it's because ppl post their private activity.
That's right - no one is responsible for the leaking of user data on any social media platform - that is why every user should be wise in posting anything there. If it is sensitive data that is potentially dangerous
[financial data] then it makes no sense to post it on social media where it will be viewed by the public. It is highly recommended to maintain financial privacy - you never know who wants it from you.
The internet is not a safe place to store any type of sensitive data - in fact, you will always be advised not to store your bitcoin online. If you do - then you should know the consequences and be prepared to take responsibility for the risks yourself.