Sure, there's always a stylistic option with colour, I get that. I don't really conflate "realism" with "authenticity" however. There's something special about getting a roll of film - which has an opinionated chemistry, so to say - and a fixed lens and just shooting life around you. More dynamic, truer to the moment in my humble opinion.

edit: I think the adjective I'm looking for is 'candid', perhaps.