After going to so much trouble to get authentic 80s props, cars, clothes, videos, music, etc...
Why spoil everything by giving Charlie 2010's slang dialogue? She says "I'm good, I'm good." when Bumblebee is brushing sand off her. Nobody said that until about 2010. She would have said "I'm OK" or "I'm alright" or "I'm fine." in 1987. At least it's not as bad as the video game "Call of Duty: WW2" where soldiers are shouting "I'm good!" in 1944.
Sloppy anachronism, though.
Also, by 1987, the game "Pong" was considered archaic and nobody would still have Pong hooked up to their TV.