Not everyone who doesn't believe in Bitcoin is stupid. For the same reason, we all can't like the same things. Even well-known economists have expressed a negative opinion about Bitcoin, and the opposite too, of course. It's not about stupidity, but its concept and idea don't apply to everyone, and everyone is subject to their own opinion, which they can voice. Thus, claiming that someone is ignorant or stupid for not supporting Bitcoin is a little bold statement to make.
However, it's true that the majority of governments aren't too fond of cryptocurrencies in general due to their decentralized nature; it's way easier to hide money and conduct transactions undercover. This enables freedoms that aren't available with the banking system. Cryptocurrencies have been notorious for the darknet markets, which certainly hasn't helped their reputation, but in reality, these transactions are only a minor portion of the true corruption out there, and cryptocurrencies aren't liable for it.
Well, I will still say that those people are stupid because they are missing something that can change the world. The Bitcoin is the only remedy to our current economical problems and when someone understands that thing then that person will try his/her best to invest in it, and adopt it as soon as possible. Those economists that expressed negative opinion about Bitcoin were lacking real knowledge about this amazing invention, they did that because they were having that so-called traditional finance mindset of the television era. This era is totally changed one and only the economists and finance specialists who have digital mindset will understand that how essential Bitcoin is to make things better in the world of finance.
Governments will never accept the concept of Bitcoin even if they show in front of public that they're supporters of it. Internally they will always have negative plans to suppress the growth of Bitcoin. I believe the banking system has much more freedom when it comes to undercover transactions of the governmental money launderers because they all are part of the same system and they can fix the written documents and other necessary transcripts to hide the money laundering that they do. The darknet is something that's run by the criminal minded people and no one should blame Bitcoin because of the criminality of those criminals who sell all illegal things on those markets. I agree that they accept Bitcoin as a way for payment, and if someone blames Bitcoin for that reason then they should first blame internet for it.
Bitcoin is great and everything; I get it; however, how can it change the world? It's not a panacea; it's not growing on trees, nor is it free, is it? You can't acquire it yourself; mining is extremely expensive and requires great knowledge; thus, the only source is by purchasing. How can it be someone's remedy in a third-world country that barely gets by? By investing? How is he going to invest if someone's barely surviving? Bitcoin is for everyone in theory, but ultimately, it's not available for everyone for a variety of reasons, such as financial, social, and topographical. Just because we're lucky that we can afford to be involved in it doesn't mean that everyone else can either.
Bitcoin is great for an average, knowledgeable person with a computer, internet access, and a job that at least provides him some sort of stability and, with some risk, is opening great opportunities for the distant future.