Bitcoin is one of the currency in the internet. Cryptocurrency is a big thing now, it can be seen in most of the advertisements online. If you are a normal person who does not read about this advertisements, you will just ignore it like everybody else. But since you are on bitcoin, when you see a advertisement about bitcoin, you know what it is about and you care about it.
Some government bans bitcoin because they do not know what bitcoin is. They are treating bitcoin as a threat but in reality it is not. They should be knowledgeable about something before banning it. They might also be scared that cryptocurrency might overthrow the real currency and also overpowering them as politicians.