This is a syndicated post from The Chant Café. [Read the original article...]
The Simple English Propers uses the Solesmes translation of the antiphons and the Revised Grail for Psalms, contrary to what you claim with great authority here. I have no idea what is an is not approved in your neck of the woods (except that I’m sure all your copyrighted compositions are wholly approved!) but there is no authorized/mandated translation of the sung propers anywhere in the English-speaking world.
Please check your facts before you jump on people for singing what the Church is calling for people to sing.