After the recent bleak market. Many people do not even understand the basic principles of Bitcoin and blockchain knowledge, so they attack Bitcoin. What kind of mental state is this?
Well as you said, they don't understand it. Bitcoin is really complicated, especially to beginners. SO if they encounter something bad on bitcoin they will slander it. In Bitcoin, you need to be open-minded about everything. Its decentralization, volatility and etc.
And people who probably slander bitcoin, not only because of ignorance but because of their past experience. Maybe they experience being scammed, hacked, and loss something. And with that, they already close their mind to anything about bitcoin and stop themselves to understand more