Well, I hope you do look into what has changed.

And I am confused by why you would suggest that Shabbos doesn't impact the typical Western Monday-Friday workweek. I live in a time zone where Shabbos starts before 4 pm for part of the year, and people definitely try to schedule meetings with me at 4 pm on Fridays. So if the calendar is going to block anything, it should definitely be blocking those times on Fridays (besides, many people do have lives in which people try to book things on Saturdays--for instance, educational institutions offer Saturday classes, law firms hold weekend meetings, etc.). What I would encourage you to do is offer two version of the calendar subscription, one of which blocks all days in which work is restricted, regardless of day of week, and the other in which there are no blocks, so users can choose what is right for them.

Hi, I am subscribed in Google, and my calendar is showing as busy. I have not imported the ICS. So I am pretty sure there is a bug if you are saying it shouldn't be blocked.

Work is forbidden on Shabbos too, but the calendar isn't blocked for that--and that's part of why I am confused--why block some and not others?