Having actually been rushed to hospital when I was a kid by my friends after a big accident on my bike I would say the number is higher than you might think. They even walked by bike back home, which considering it was miles from home was pretty mad for teenagers.
I would say at least 20 people I know who are close to me either have done something I would consider above and beyond for me already or I know for sure would do so. Thats not counting any relatives.
Power Trip, with Riley on vocals when they played Bloodstock early Sunday morning, way before lunch. Was a fan of their Nightmare Logic album so I was going whatever was happening, but as they played their set the crowd just kept growing, and would rival a lot of early evening bands. For the last day of the festival, in the morning.
They gave everything for the performance and when I met them afterwards they were just completely wasted having flown over and more or less gone straight on stage.
You can watch the show here: https://www.youtube.com/watch?v=yPRBpKybx_U&pp
What subjects are you comparing it to? At its fundamental level math is a building block same way your native language is a building block to learn other subjects such as history or biology or cooking. I am splitting out language from literature the same way I would split Maths from engineering or physics, theory vs. application.
I can only speak for English as that’s the only language I have ever really studied but for the average student whose native language is English you simply do not need to study English language to the same level as somebody looking to apply Maths to Biology or Physics to a advanced high school level. You simply do not need to do this to the same level, high school English language simply isn’t as deep a subject. High school literature is potentially, but again, that’s application not theory.
On top of this, you use English far more often than Maths both in school and out of school. Average kid isnt going to use much Maths day to day other than wondering about basic fractions for sharing a pizza/cake, or simple addition/subtraction for pocket money type stuff. Sure, there will always be exceptions but I am talking about the majority.