Some people have unreasonable expectations for early stage technologies, such as cryptocurrency. It's like they want streaming video and Netflix but it's only 1996. It takes time to build protocols, solve the last mile problem, create layered apps with great usability, etc.
They get upset because things are complicated, confusing, and hard to use. Their emotions are on overdrive because they know they invested (or, to be more honest, speculated) on something they don't fully understand. They broke investor rule 1.
We haven't yet had a Steve Jobs of cryptocurrency to abstract away all the complexity and give us simple user interfaces. Things are still hard to use. That said, just like driving a stick-shift, with repetition and training, using cryptocurrency does become second nature.