Yes, it does. I also think it's a very underrated skill.
As they are currently constructed, no one is going to out shoot GSW on a consistent enough basis to beat them in a seven game series. You may get hot a couple times, they may get cold a couple times, but at the end of the day with Durant, Curry and Thompson, you're just not going to out shoot them the majority of the time.
So, the way to beat them is to get more possessions. One way is to limit your turnovers. That's GSW's one Achilles's heel - they get careless with the ball and turn it over at a fairly high rate. But ultimately, the best way to carve out more possessions is on the glass. Limit them to one shot and get yourself some extra possessions through offensive rebounds. Swanigan and Nurkic will makes us much better in this regard. Nurk only played 16 minutes in that GSW series, but in those 16 minutes he owned the defensive glass (11 DRB) and we outscored GSW by 8 points in those 16 minutes. As we saw in summer league, Swanigan is relentless on the offensive glass.
And it's not just GSW, if you can dominate the glass you give yourself a chance to win every night, even on nights when you don't shoot well - especially on nights when you don't shoot well. OKC was the worst 3-point shooting team in the league last season - dead last, 30th of 30 in 3FG%. In today's NBA, that should be disastrous, but they were also the best rebounding team overall, and the best offensive rebounding team in the league. Their rebounding helped overcome their poor shooting and allowed them to win 47 games and be the 6th seed in the very competitive Western Conference.
Now picture PORs shooting (6th in the league in 3FG%) with a full season of Nurk and Swanigan dominating the glass at both ends of the floor...
BNM