Because everyone's anxiety is different to each individual. How I deal with mine is different to how you deal with yours. Our own individual experiences direct how we deal with, and what is the anxiety we all suffer from.

My joke was more about the idea of parents or workers saying things like "You have no idea what 'tired' is until you've X, Y, or Z".

I'd love to see how gatekeeping anxiety would look like.

"Oh you're worried about climate change? Please. You don't know what it's like to worry. I was worried about the cold war where nukes could fall on us at any time. We had to do drills in class hiding under desks. Kids your age don't know what anxiety is! "