In every industry or market, there will always be people whom many loves and many hates. And in Bitcoin and cryptocurrency, there is no exemption here. While hating is not a good business, expressing some dislike can be a healthy one.
As far as being hated, I can think of at least two personalities, and we know why many don't like them: Roger Ver the man behind BitcoinCash and of course Craig Wright who earned the moniker as "faketoshi" as he is continually claiming to be the real guy and behind the Bitcoin SV (the original Bitcoin, according to its site).
Can you add more, please.
For me it's John Mcafee, he is a total piece of crap. Being optimistic regarding bitcoin is one thing and promising to eat your own dick if the price doesn't reaches upto a certain level is totally another. Moreover, since 2017 he has been using his influence to introduce various fake pumps and dumps into the market. Not to forget about his recent decentralized exchange which to me doesn't looks decentralized at all. He has zero sanity when it comes to cryptocurrency. I say he is the biggest virus made by an antivirus company.