Got it, thank you so much for your answer!
As regards the name, there are opinions like this:
"Yes, Apple's really called its next Mac operation system Big Sur. No, it's not another name for the headmaster of your school (get it), it's named after a mountainous area in California. We're sorry Apple, but we just think it's a silly name. It's just embarrassing to call an operating system Big Sir (but maybe we are pronouncing it wrong?)"