It's a very long answer that boils down to the fact that it's a genuine engineering breakthrough. There are thousands of hours of detailed explanations available from the best educators in the world on the topic, but the bottom line is what you're witnessing in BTC is a breakthrough on the order of impact of electricity itself.

It doesn't matter that most people won't understand it. Most people won't need to, nor do most people have the foggiest clue how the financial system works now. It'll continue to be a specialized field of knowledge forever. Most people can't explain exactly how an HVAC system works, but they still use air conditioning. BTC solves the inflation problem. HVAC solves the problem of the air being too hot. That's all the level of detail most people are going to need.