I’ve worked as an independent repair guy. Apple’s own documentation mentions the fallibility of the “red dots,” and it surprises me that someone would be, frankly, so lazy as to invoke “liquid damage” based solely on those turning red. I’ve been in a position before where you can literally watch beer drain out of a broken laptop, and you know, yeah, the computer’s totaled. But in this video, to try to deny a repair that’s probably just a bad LVDS cable? Give me a break.
To give the Genius a little bit of the benefit of the doubt - every repair room in an Apple store is unique, and unfortunately, some of them have a culture where sympathy is in short supply. They need to start paying Geniuses a little bit better (you get what you pay for) and stop forcing them to see 32+ customers per day.