Probably the most realistic scenario. Not sure what others are saying about not passing? He doesn't dominate the ball as much as Kyrie (not many do), the ball always moves better when he's on the court because of this.
False
https://stats.nba.com/players/passing/?Season=2018-19&SeasonType=Regular%20Season&CF=TEAM_ABBREVIATION*E*Bos&sort=PASSES_MADE&dir=1
This stat is pretty useless as it is a per game stat. Kyrie actually passes less per minute than Rozier does, which invalidates your point.
In relation to usage, among players that had at least 100 minutes of action, terry had the 3rd highest usage, despite bad passing numbers, and one of the worst efficiencies of the entire team
This also doesn't mean what you think it means. Terry Rozier is a point guard. Look at Terry Rozier next to other point guards. If you took all the players in the NBA who are under 6'7, played at least 15 mpg, and appeared in at least 40 games this year, do you know where Terry Rozier ranks?
106th. Slightly ahead of Luke Kennard and slightly behind Norman Powell. Behind guys like Shea Gilgeous-Alexander, Jeff Teague, Malcolm Brogdon.
Kyrie Irving meanwhile (and I'm not saying this is good or bad) has the 11th highest usage rate of those 228 available players from 18-19.
Looking at league wide numbers Kyrie is ahead of Paul and Harden for passes made.
While Rozier comes in at 70th in the league behind such passing geniuses as Gobert, Capella, Jabari parker, Danillo Gallinari, Booker, Collins, Mudiay
To show you how insane this stat is for the context you're using, you're representing Rozier as a bad passer because he's 70th league-wide in passes made.
By that same standard, Blake Griffin is a better facilitator than Kyrie because he makes 10 more passes per game.