Men can be cruel when they're not attracted to a woman. It sucks
I'm guilty of it as well, at least in the past, now I'm more respectful, but careful
about not leaving a sense of false hope.
The woman in the OP is attractive though.
I've never done online dating, tinder or none of that shyt, so I'm not sure how common it is to post a picture that isn't really how you normally wear your hair, or that isn't really an accurate depiction of you, but I see both sides. She posted a pic of her with long weave, and a hat, and had an angle that made her look one way. He was clearly attracted to that. Then she shows up, with a completely different hairstyle, which the guy might not find attractive. I think the way he reacted was immature and mean, but I get it. He might be one of those men that isn't attracted to natural sisters. Which the coli tries to say doesn't happen, but yes it does.
In any case, this is one of the reasons I won't do OLD. It's just better to meet someone in person, because what you see is what you get. No worries about being tricked, or feeling self conscious because you don't look like you did in a good angled pic. I've had success with meeting men irl, so haven't had a need to do OLD anyway, but these situations seem like they would be awkward no matter how you cut it.
The reason I feel sad for her, is because of how she looked when he was laughing. Like the hurt in her eyes and soul. That was awful to see. And this is why some women feel bad about being "weaveless". The thing is this girl is still attractive, and looks like she's a nice girl. I hope this doesn't "color" her feelings about men, too badly.