The last time I had a sort-of externally imposed schedule was at school. At university, attendance wasn’t required, nobody cared as long as I passed the tests. Since then, which is over 20 years ago, I have exclusively worked jobs that are WFH, with teams on various time zones and frequent travel (for others, not me), so everybody is used to scheduling calls via doodle etc.
Too bad this is incompatible with the society. So we got to pay the context switching tax.