The 5 inning rule was another one that made sense years ago. If a starter went less than 5 innings but the team held the lead the rest of the way the starter was usually out due to injury, or maybe ejection, or maybe the score was 12-8. The reliever that came in would have likely finished the game and would have been more deserving of the win. You wouldn't have a 4 inning start followed by 5 relievers pitching one inning each.
The W/L record made much more sense and meant much more when starters often pitched complete games. A bullpen pitcher getting the win usually happens by default, and sometimes it's a bad thing when it's a BS Win.
Its a good thing to keep the Cubs in it a bit longer. Coasting for a month and a half can make it tough to handle the intensity of being thrown into a do or die 5 game series in October.
Its also good for it to happen while still playing well and really just getting unlucky.
I mean Seigler has actually pitched before. I know it was high school, but still, he looked like a pitcher out there. The guy the Pirates put out there was a complete joke. I wish teams wouldn't do that.