I disagree with the author.

All it would take is for a 'white male PM' that Quebec does not like, and all of a sudden those 'far left young people' will vote 'out'.

'QS' is still a sovremingtist party.

QS and PQ don't like each other but would align if a referendum would be called.

In many ways it might work well: lefty separatists vote QS, righty ones vote PQ. There's always been a weird tension in the PQ because of this, this solves the problem, actually.