In some cases, some people that advocate Bitcoin are the one who pokes around others, they praise that bitcoin investment is better than others and mock other people who wouldn't agree with them. Not to generalise but there exists that kind of people within the cryptocurrency ecosystem. I think that could be the causes why some people just simply hate bitcoin, or cryptocurrency in general, since many people incorporate bitcoin with cryptocurrency.

As time goes by, I don't think hate will stop coming toward bitcoin. So it is necessary to set boundaries about what people choices. And focus to what matter, in case it falls into FUD, then we should correct it, just like the current attack from entities that want bitcoin to switch into PoS.