Tough to know how things turn out. Right now, Habs fans have bought into a rebuild, and have shown patience in the past.
I'm not sure Galchenyuk, Leblanc, Kotkaniemi are good examples. These players were all rushed to the NHL and Habs fans saw the damage it does to rush a player. In fact, all you hear in Montreal is people begging the Habs to demote Slafkovsky out of fear of what happened with KK. They WANT the Habs to marinate prospects, they're ROOTING for the Habs to lose this year... I'm pretty sure everyone has bought in because they're tired of being a middle of the pack team carried by a star goalie.
I could be wrong, but we will see.