You're right! They're both dangerous. If I posted your public address on both of those websites, how you would you feel about your own safety? Not your Facebook account mind you - just somewhere on Facebook.
That's unsafe speech. Other examples of text where being associated with safety makes sense:
1.) "Hey everybody! Let's kill all type of people who like X tomorrow. Like and share to get the word out!"
2.) "Hey here's the address and personal info of someone I disagree with politically. Let's organize an effort to camp outside their house with guns to scare them. Or lets "SWAT" them.
I am not misusing my information in either of these cases. Instead my information is being misused by others who use the space as an organizing ground. When people ask for Facebook to be regulated, they want hate speech like the above to be removed. People make the argument that this is a slippery slope, but that's a fallacy for a reason. It's trivial to regulate speech of this form on their platforms if they were willing to pay for it, but they aren't. Thus we must force them to regulate this.
You're conflating a regulation of speech one disagrees with, with hate speech. Hate speech is not simply speech I disagree with. It can be clearly defined in many cases (like above), and in the cases where it can't one can simply err towards allowing it.