Since stylelint has out of the box support for vue-files, it can be safely enabled. It seems there's no other way to enable it easily otherwise, I tried and failed (see https://github.com/w0rp/ale/issues/1712 for reference).
I realised that the settings being there cause problems with how people configure their own linters, so I recommend just removing them entirely. The defaults can be changed in ALE itself.
Since stylelint has out of the box support for vue-files, it can be safely enabled. It seems there's no other way to enable it easily otherwise, I tried and failed (see https://github.com/w0rp/ale/issues/1712 for reference).