Let me explain, why people believe hardcap is a way to go. People are driven by emotions and emotion which created crypto was fear against massive inflation caused by governments, remember bitcoin genesis block.
I think you are right "Inflation is the Killer Dapp" and I love this sentence.
Just remember we are the people who are escaping from government controlling and increasing inflation and this fear and new shelter is what connected us.

Imagine we, the people who run away from oppresive savings order, will create similar order we escaped from.
We as humans, are just silly beings in the end :)