Good to someone, somewhere, telling everyone else what good is.
Arguably, code formatters should be configurable, to get a format for your code that you want. Unfortunately, prettier isn't one, and it is a form of regression in many communities at the cost of choice pruning.
It might be great for a CI pipeline for constraining how code should look (use prettier, dumbass!), but it isn't great for actually formatting code, as it just makes the code "prettier".