LA wasn't a 2 time Champ when they were the 8th seed. That was the year they won their first Stanley Cup. You're changing history to fit your narrative
Montreal went to the Cup Finals. It wasn't just the Leafs that lost to them. They swept Winnipeg and then beat the heavily favoured Golden Knights in 6, who took out favourites Colorado.
Also, the Leafs lost their captain 10 mins into the series - that's definitely bad luck.
Colombus they choked, but it was also the first best of 5 series. In a normal playoff, that series isn't over.