I think there are a lot of biases at play here that are giving the impression there's some huge 3rd period blown lead problem. Teams that trail tend to press the offense and take more chances. Teams that are leading tend to tighten up. This shit is as OLD AS THE HILLS in all sports, and across almost all teams.
And IMO the "problem" here is tinged by the fear and disappointment (and agendas some have) whenever there's a recently eroded lead. Here's the reality:
View attachment 414846
Caps this season are 4th BEST IN THE LEAGUE at closing the deal when leading after 2 periods. They've lost ONCE.
So what is all this handwringing really about, if not people just disliking the idea that the bench shortens and the shutdown players bring home 2 points.
How is .947 winning % and 18-1 record leading after 2 periods some crisis that demands opening up the offense in the 3rd period??
By far the bigger concern is what happens after they grab an EARLY lead.
View attachment 414848
Much, much worse at protecting a lead after 1 period despite a very good 2nd period goal differential. And they aren't blowing those leads in the 3rd period, again per the chart further up.
The problem is losing leads in the FIRST period, or giving up slim leads in the 2nd. Not blowing leads later in the game.