Profiled Denoise in RawTherapee?

It is kind of always the same, there are several tools in RT that I wish dt had and the other way around… I think it is interesting though… I think the two programs represent two different attitudes. I was already wondering who, what kind of people the programmers are - do they e.g. belong to certain nationalities? I have also noticed that the documentation of dt is in English, French, Italian and Spanish - why these languages? Just conicidence?