It's anonymous. But the problem is for example someone try to purchase drugs using bitcoin. This become a new era of transaction without being notice.
There is pro and contra about it, it is just the same as fiat, you can't make something in a prefect condition, there will be some who support you and some who dont so just let it flow
The best thing in bitcoin is, I can save it in my own bank, blockchain, and get full control of it. We don't need the teal banks anymore, and don't let them take our money.
The disadvantage IMO, what will happen if internet get shut by some accident or disaster... I think there's no way out to recover our bitcoin once that happen
Which disaster will cause that? Lets say if they got disaster they must have something to backup their internet and there is no way that they will shutdown the internet, because the new era which is going is online so everyone need online things, who didnt have any internet can't compete in outside