They have the current MVP on their squad, a good coach, a couple of very good young guards in Maxey and Melton, and just one year left of that Tobias Harris albatross contract. James Harden having another poor Game 7 is a bit concerning given that it feeds an existing narrative but like others have said, Tatum was in line for all the smoke until he suddenly came alive at the end of Game 6 to extend Boston's season and now he gets to be the hero. Steph Curry very nearly ended the Warriors season with his TO at the end of Game 4 in our series and then he ended up having that huge Game 7. Harden didn't have a great series overall but he carried them in Game 1 without Joel and had two games of 40+ points so his poor shooting in Game 7 isn't indicative of anything other than bad timing.
Then again, this is the NBA so panic and overreaction is pretty much a given right?