The trailer music is damn near a ripoff of the Infinity War trailer music

The FB2 clip you posted sounds like a slow variation of the original John Williams Harry Potter theme to me:

https://youtu.be/Htaj3o3JD8I?t=45

Somewhat, but that's just pretty much how big Hollywood action, science fiction, and fantasy blockbuster scores have sounded for going on twenty years now.
Seems that instead of going for a more personalized sound, they opt for Hans Zimmer, John Williams or knockoffs of their styles.