Honestly, I'm happy for Quebec nationalism as long as its not separatism. I don't necessarily think it also has to result in the xenophobia it has and stuff like Bill 21. I think there is a way where you can have a strong national Quebec and still have strong unity, and with separatism being on a decline there, this might be a step towards that.
There is also a big difference in that the BQ is fairly close to ideology on most things to the Libs, NDP, and Greens and Bill 21 is really only the major clash - right now, Quebec wants the same things as most of Canada. That's a very different disunity than BQ was in the 90's. With Alberta, they are clashing on what is probably the biggest issue for a majority of voters either way.