Blockchain. Most of the people who have this hate don’t know how it works in even the most gross sense, believe that it and cryptocurrencies are the same thing, and have a visceral, knee-jerk reaction when they’re mentioned, without being able to explain why.
Cryptocurrency, too, although there are far more examples of bad actors in that space. But the concept of an economy that works across the internet entirely outside the control of 5-eyes surveillance states? Yes, please.