This is such revisionist history. I will bite though.
Here is a link that has Bruins barely making it in as the wildcard and Caps missing entirely. I am not sure any of these have all three teams making it this year:
Hurricanes, Avalanche favorites among NHL.com staff preseason picks
www.nhl.com
Again this one has this Bruins (and Caps) BARELY making it in:
The 2022-23 NHL standings as predicted by oddsmakers | Offside
These were the first two links I found. Maybe we have different definitions of the words slowed down but to me this means they are going from a contender to barely making the playoffs/missing entirely. Which is exactly what you see in many projections.