I disagree, but I'll go back to the topic at hand.
Sadly I don't think the NDP can do anything to win back Quebec with Singh. Ultimately the Journal de Montréal and LCN decide the mainstream narrative in Francophone Quebec. Go to almost all restaurants that have a TV and newspapers available in Montreal and its always LCN and Journal de Montréal. LCN and JdM are also the most popular news station and newspaper in Quebec.
For the past decade almost daily, they have been saying minorities bad, non Christian religious people bad, anglos/allophones bad, they frame all these groups as threats to Quebec (this is not speculation, I always read JdM when I go to a restaurant because I want to know what the mainstream Quebecois are consuming). Its Fox News style brainwashing, repeat the same thing over and over again and people's beliefs change. Google Journal de Montréal's opinion articles any day and the majority will likely be articles trashing minorities. LCN and JdM were most central to why people became so against religious minorities, they created this crisis. Nothing Singh does will deprogram a decade of brainwashing. At best Singh can win over the people who haven't been infected with the poison spewed by Quebecor anglos/allos, francophones from minority communities and young francophones.