60's/70's/80's hits is very cheesy for a space opera.
Space opera is supposed to have a modern theme like Star Trek and Star Wars, not old fashioned.
Orchestral and electronic music is much more stellar, celestial, and cosmic. Listen to the film score even though it doesn't seem to have synth.
But I guess this is the music that Star-Lord grew up with.
If I wanted old hits like these in a Marvel or DC movie, I'd rather have it in a down-to-Earth movie than in a space opera.