those who don't know what bitcoin really is, what its history is. It's free to share opinions about crypto, but sometimes their education or opition on crypto t doesn't match reality what actually happen in crypto , and most of them are sharing false claims or false assumptions. but I think people are now smart enough to accept the information.
true as you said, most of the people who hate bitcoin, because they do not understand bitcoin, there are also some companies who hate it because they are afraid of being rivaled, if the government hates bitcoin it is most likely because the government is afraid of their currency being replaced by currency in digital. .