I think you need to work on your perspective-taking skills.
It seems like what's happening is that women on social media are sharing that they feel inherently unsafe around strange men in remote and unexpected places, and your reaction is "That hurts my feelings as a man, and those women are wrong!"...
If you're not dangerous, that's great. Your feelings for assuming you're being generalized are valid.
If a woman reacts to you, unprompted, with fear, I think it's important to understand the reasons why she might react that way, rather than be angry about her fear. Frankly, getting angry at someone's fear would most likely reinforce that fear. And I think understanding would help reduce the anger you feel.