I will take the credit or blame (depending on your POV re: tanking) because I again chose NOT to watch the game, rather, sit with the wife and watch the standard Thursday night TV fare. I'm probably misremembering, but over the years, I do think their win % is much higher with me not watching, and much lower when I am watching. And, as to seeing them in person, if I am using just my regular seats, their win % is about average with their overall tenure here in DFW, but if I buy extra or upgraded seats, they tend to lose.
As to complaining about the first period? I've watched 28 years of Stars hockey, and probably over 1500 games in person or on TV. I can't recall many where one team dominated the entire game. It usually goes in small waves with the better play alternating for a few minutes at a time (sometimes longer) The problem with social media is 1) We love to complain, and 2) we can complain almost instantaneously, whereas in the old days we would have to read the stats in the papers to get an idea of how well they played overall in a close game.