It’s totally fair to assume this song is in C minor. Sure, C minor chords shows up here and there, and much of the melodic content could be attributed to the C minor pentatonic scale. I wouldn’t blame anyone for thinking this song is in C minor.
It absolutely could make “lazy” DJs better selectors, however, that is not our focus. We want to help people become better listeners and help them identify and understand the music they actually love, so they can confidently find more of it.