I find this so strange. I also loathe nitpicking about syntax which is precisely why I think this would be a great tool!
I work in JS now on a large team and one of my least favorite activities is trying to find consensus on which linting rules we should/shouldn’t adopt. It’s such a waste of time!
(Linting is slightly different -- just use some sane eslint defaults and call it a day)
I find the argument that it will stop discussion of style bizarre, because it only shuts down discussions about style if you already have the power to tell people what the accepted style for your organisation is. In that case you don't need a tool that refuses to let you pick and choose, you just need the confidence to tell people you're not going to change things.
In other words: It's not Prettier that stops you from having discussions about style again, it's whether or not you signal to people that you're not willing to discuss it. To me, in that respect, a tool like this is a passive aggressive way of signalling that you're unwilling to discuss the subject without being willing to just say that you're not.
The antidote to nitpicking isn't to force something where nitpicking isn't possible/already resolved, it's staying open-minded and flexible enough to not let the nitpicked things bother you. "There are many roads to Rome" and all that.