it takes a while to learn how to use your text editor well, and everyone is probably good at a different one. but they all pretty well have the ability to produce the same result, so why bother forcing one?
it's better to (have a tool that can) specify what the end result should look like and let people work the way that they are good at.
Nobody has a problem with this, although in the Java world every corporate developer uses IntelliJ anyway. A couple of legacy project teams are still on Eclipse.
I can understand wanting to standardize in a company with a 1000-person engineering org, where maybe it's harder to enforce that everyone uses the same conventions if there's no standardization in tools; but in a team of a few dozen, you should only be hiring people you trust anyway, and communicating with them about why small things like this are important.