As for colour, grain and halation, well I've been rethinking what film photography is for recently. When film or analogue photography was just called Photography as there was only one type of photography people strove for the sharpest, cleanest most true to life results. Today a digital image is super sharp, super clean and super fast. The film resurgence is being led mostly by the younger generation (18-34 year olds), at least according to my YT audience stats. I'm sure they all have mega camera phones and maybe even modern digital cameras (indeed I see a lot of creativity in the digital field from young people, largely driven by an explosion in low cost music production). These young people don't have the frame of reference we, older, people do. So maybe the modern niche for film photography is super emotive, super arty and super creative. In that space grain, halation and all the rest of it may be advantages.