While such jobs require indeed people working on weekends, it doesn't mean that the workers themselves need to be present 7 days a week. It's possible to uniformly distribute 2 free days per week among workers and still guaranteeing 24/7 service.
> Those that lament its passing as some sort of societal shift show thier colours.
Not sure what "their colours" mean. Why should we lower our expectations to the lowest working conditions? Instead, why don't we all aspire to redistributing our working ours to ensure a fair share of free time.