The thing about Kyrie is, sometimes, particularly in championship games that are very close, is that you need someone to go get you a bucket and he can pretty much do that the majority of the time. His younger teammates, while being very talented, aren't quite at that level of consistency, or aren't quite able to produce when the pressure is greatest.
The balance is in giving the younger players time and space to grow, make mistakes, try to win a game (like Tatum tried to do vs Orlando), fail, and learn from it. The fans will be up in arms because "why didn't Gordon just pass to Kyrie why pass to Jayson??" but over a long season there's value in losing those games if it puts the likes of Tatum in those positions so they can learn to consistently execute when the game is on the line. Just as long as you don't lose too many, because again there is a balance between growth for the young players and positioning the team for a high seed for a playoff push.
What surprises me is how hard it is for many people to realize that while young players can change and improve, so can stars like Kyrie. Back in Cleveland he was an iso shoot first ball hog, because he was never expected to facilitate for a team, or even guide it, with LeBum there. He was never really primarily responsible for the growth of his teammates. He's in a different position now in Boston, he has to balance the need to keep winning (and do all he can to make sure they keep winning) with giving his teammates the chance to make mistakes and learn from them, even if it costs games. It's been obvious (to me at least) that he's making more of an effort to be that different type of player here. His usage has dropped, his assist ratio is up from 30% to 36%, his assists are up from the mid-4s (in Cle) and 5.1 last season to 6.8 this season. Players can change and develop over time, depending on circumstance. Kyrie's only 26, why wouldn't we give him credit for those efforts to change and broaden his game?
But because he's such a great finisher, there are always going to be times when the game is close when we need to give him the ball and get us a bucket, or facilitate a two man game for us. Just using the game vs Toronto, he had 14 pts and 8 assists in the first half while Gordon had 16 in the 1st. Then in the 2nd half he had 13 points and 10 assists while Al had 19 out of his 24. A balanced approach which was needed for the situation. Then against Memphis Tatum, Morris and Hayward were 0-6, 2-7 and 4-12 for a combined total of 6-25. We needed Scorer Kyrie for that game to get us those key buckets when we needed to down the stretch to eventually create separation at the end, because nobody else was able to do it. That's the real value of having Kyrie, or Durant, or Curry, or LeBum, any of those players who, when the game is on the line, you need to go get you a bucket. There's not that many of them around.