I’d argue that quantum physics is genuinely difficult, but also not very applicable to most people’s daily life.
Anybody who claims to understand quantum physics … doesn’t. If you think it’s easy to understand, then you have a very superficial and incorrect understanding of it. Actual quantum physicists, the foremost experts in the field … they may know the math behind it and be able to figure some of it out … but they’ll be the first to tell you that they don’t understand most of it, though they’re constantly trying.
Quantum physicist: “This is the equation that describes the phenomenon and has so far done a very good job of predicting the outcome.”
“Cool. Why does it work like that?”
Quantum physicist: *shrug* “Hopefully maybe someday we can figure that out.”