I believe this is due to FL state laws. I'm not an expert here, but I've read a few internet threads where people were amazed at the fact that victim names were published and the person charged was redacted and the response was that FL law dictates what must be redacted and it lines up with how these stories have been handled. I wish I knew enough to cite the specifics but that's what I've heard contextually.
As for the video, my interpretation is that the guy got a little pushy in getting up to the bar and the girl took exception to how much he was pushing her around to get to the empty spot. It looks like she called him out on that verbally at first, then cocked a not very threatening fist. He grabs her arm (he will likely claim self defense here but IMO she didn't look threatening at all) and then he escalates it with aggressive pushing and shoving to the point that the guy behind her is getting pushed around too. At this point, she probably feels threatened so she throws a little punch that is about as hard as a shove to get him to back off. He responds with a haymaker. I'd say both were at fault here in terms of instigating things, but I think he showed way more aggression in the way he grabbed her which liked caused her to get physical.
What we don't know is what she said to him at the 1:48 mark when she slides up to the bar ahead of him as they are both approaching. It may have been a taunting/teasing comment about he's too slow to get there first or whatever, but if it was a comment he took exception to that might be what started the whole confrontation and lead to his aggressive pushing to get to the bar counter as well. Nothing she could have said is an excuse for his behavior, but it could have been the instigation point.
His name was redacted because he is an underclassman supposedly (the funny part about that is that he was AT THE BAR ILLEGALLY - he is not allowed to be AT THE BAR underage). Supposedly, the woman's name was included because she is over the age of 21 as ironic as that is. Not only should this scumbag be charged with assault (there are laws against hitting people you have over-powered -- his holding of her arm to keep it out of the way CLEARLY makes this assault given the size differential of the two), but he should also be charged for being AT THE BAR ILLEGALLY given that he is a minor and they have video of him at the bar!