This is my favorite version of this song. I attribute that to Jennifer "Sparky" Sparks's solid and prominent drumming and Cheryl Jewell's powerful vocal delivery. Jewell really carries the phrases through so that this version packs a real punch.
Perhaps they decided not to make a Thanos movie when they realized Squirrel Girl could end it in five minutes.
"There's only one song I know." Ouch.
It IS a real song.