Isn't that all you really wanted to say though? "I liked the music in Suicide Squad more than [insert any given Marvel movie.]" That video you posted just smacks of biased, agenda driven "I'm going to prove my why opinion is right" internet silliness. All of the "evidence" supporting his claim can easily be shot down. Music is inspired and "risky" if he can find three people on the streets of Vancouver who can hum the tune? How many did he interview? What would he have done if the first person hummed Cap's theme from The First Avenger? Play that person's clip? Yeah right. He gave a tiny, heavily edited example of a few people who support his theory.
Then there's his other examples. TWS had great music but he singles out the Smithsonian narrator who was actually being heard by the characters in the movie itself? Hardly indicative of the entirety of the MCU. That'd be like me showing a five second clip of R2 being hunted by jawas in order to bolster my claim that Star Wars has no music at all.
With regard to temp music he cites Star Wars and Harry Potter as shining examples of inspired music. And yet Williams himself lifted the droid factory music from AOTC and put it into the Quidditch Match of HP and the Chamber of Secrets. Stanley Kubrick ditched an entire two hour score in favor of public domain classical temp music for 2001. Every example of Marvel's musical "sins" have been praised or at the very least given a pass when done in other films.
Keep in mind that I *do* agree with you ZaCHw117 that Marvel doesn't have a truly transcendent theme like Superman or Star Wars. And I wish they did. But keep in mind that few films do and if you prefer SS's music over Marvel that's great but it's not like any random person would recall any themes from that movie either.