Hey, yup, I worked on it this week and the PR is ready 
https://github.com/discourse/wp-discourse/pull/422
It does what you expect. The configurable text will be available as part of the WPML translation pipeline. We’ll add support for other ML plugins in the future if they allow for dynamic strings.
A previous PR needs to be merged first. When @simon merges that I’ll be able to bump the version on this PR and it’ll be ready to be merged.
So this feature will likely be part of version 2.3.2 of the plugin.