Millennials didn't kill TGIF; OK Cupid did. TGIF's heyday was in the 80s, when people actually met in bars:
https://www.newyorker.com/culture/culture-desk/how-t-g-i-fri...
It's hard to imagine a world where people would go to TGIF looking for love, but this was actually a thing in the 80s.