Does anyone here still actually care about plus/minus outside the petty use of it in player vs player debates? But, oiSH% way better captures the sustainability of point production, which seems to be the emphasis here.
Plus/minus went from overvalued to undervalued. -12 in 15 games or something like that(See Ristolainen) is still something to take into account. The main reasons plus/minus is a bad output stat is because:
1. -20 over 100 games is very different from -20 over 10 games, while GF% doesn't have such an issue
2. It is affected by 6v5 and tends to favor defensive players who are out on the ice to defend a lead and to make offensive players trying to score a tying goal disadvantaged.
However, if you understand and recognize this, it still is as viable of an output(what actually happened)-type stat as any. You shouldn't just brush significant plus / minus issues aside with "it's a useless stat" simply because if plus / minus is terrible within its context, chances are that the stronger stats like GF% are terrible as well.
Oh, and team Unsustainable.