Last season, Atlanta had 43 wins and 39 losses without Dejounte Murrray but with Kevin Huerter.
This season, with Dejounte Murray but without Kevin Huerter they went 41 and 41.
Dejounte Murray does not move the needle that much for this Hawks team. He has been played out of position on that team and in a role that he is not best suited for namely sharing the ball with a ball-dominant PG in Trae Young. This has reduced his impact and thus his importance.
Those stats reflect the season. Also, they lost Gallinari from last season, and I am sure some other changes.
That does not reflect what I have seen in the last 4 games. Murray has been very important. He has hit big shots. He is probably the main reason they were not eliminated in 4 games already. What he did in the regular season doesn't matter the last 4 games.
For 1 game, teams actually have a way of playing well when they lose a player. Look at MIL in Game 2. You see it all the time. I hope the Celtics don't let that happen in this game.
So yes, I believe Murray has been a very important player in these 4 games (really more the last 3). And yes, ATL could get inspired and come out and be a tough out even without Murray.