This is a solid defensive team, but I don't see them beating the Warriors. The Dubs have answers to all of Boston's questions, but the reverse isn't true. They've got nobody for Durant and nobody for Cousins, which means they also won't be able to guard Steph and Klay. And that's just for starters. Once you start mixing and matching the bench players then I think things will get completely out of hand.
Also, I think people are giving this team a little too much credit by proclaiming this squad to be championship-bound. Let's not forget that LeBron sonned these dudes last year, they don't really have an answer for Embiid nor Simmons, and Kawhi is easily an upgrade over DeRozan.
IMO, this team is easily wait-and-see status. As others have stated, Kyrie could get injured (though Steph could too TBF), Hayward hasn't played ball in a year, Brown and Tatum are still stars in-the-making, and Horford is more of a utility player than one who'll carry the team in scoring. That's a lot of variables to place up against the machine known as the Warriors who're arguably better than ever.