Only the first one is clickbait in the style of blogs that incentivize you to click on the headline (i.e. the information gap), the last two are just fun puns.
Honestly I took the first one as making fun of that trope. Usually the “one weird trick to” ends in some tabloid-style thing like lose 15 pounds or find out if your husband is loyal. So “parallizing CNNs” is a joke, as if that’s something you’d see in a checkout isle.
It's a reference to the lyric "love is all you need" from the song "All You Need Is Love" by the Beatles, and it uses a faux-synonym with a different meaning.
