No, that's not what Matti's post says.
Translators (like you) are different from beta testers as they find bugs, and you translate the whole thing. Both are very important though.
I see that you're an official tester on Messenger Plis! (Live). You can compare: you haven't translated Plus! (as far as I can find out by setting the language to Spanish
), but you have tested it. For CDL, i's inverted.
EDIT::
But you can alsways ask Matti..