fwiw my dentist doesn't shill any products and still highly recommends an electric brush, even the worst ones are better than you can do yourself. She also said a water flosser is great for gum health but to still use floss at least a few times a week because they can struggle with large bits getting stuck where the teeth make contact.
Maybe. A roll of floss is 3$ and 5 minutes a day. A filling at the dentist is 300–500$ and lasts 5–10 years before needing to be replaced + the pain. I’d rather floss just in case, it’s a cheap insurance policy at best and it does nothing at worst.
Five minutes a day is an appreciable portion of my waking life. Granted that's only like .5% of the rest of my life, but do I really want to spend one of my 200 activity tokens on flossing? (That said, I do floss sometimes, but 5-minute-a-day activities quickly add up, is my main point)