Uhh, no?
But technically you can. You can learn other languages.
But all Druids get their powers from the Emerald Dream and the Wild God’s. Most of the races tap into the same Wild Gods.
It would be like saying that everyone learns English from the same person, but one guy develops a French accent, one an English accent and one a Georgian accent.
If you’re surrounded by that accent, you’ll pick it up. (Zandalari) But someone who has an American accent can also pick up a British accent.