And a first down ends the game
Sure, but now you have a still relatively-inexperienced QB back in the pocket certainly trying hard to protect the ball, and also with the realization that an incomplete pass gives the Chiefs 40 more seconds to work the field. The Chiefs have a really great D coordinator, a fantastic defense this year, and one of the best interior pass rushers in the game - and no matter how much you hate them, no one can deny that they come up big when it matters.
So, with no one open, or open enough to take the chance, Love gets sacked. It was that or throw it away and give KC those 40 seconds.
Now a middle-range kick becomes a 48-yard FG at Lambeau at night in December, and if he misses, KC starts out at the 38.
You took an almost guaranteed 8-point lead with under 1:20 left, kicking off to an opponent with no time-outs and turned it into either the same situation (since he hit the kick), a 5-point lead with your opponent starting in good field position at their 38, or an 8-point lead kicking off to KC with almost 2 minutes left.
Look at the end of that game - KC had to throw sidelines twice (or throw it away) because they had no time to go anywhere else. Put 40 seconds back on that clock if Love had thrown an incomplete pass on 3rd down, and Mahomes can work the whole field from inside your 40 for three or four extra plays.
Being aggressive is one thing. Playing stupid clock management is something else. That was a stupid call.