Toddler watching Australian videos

We are American and my 2 year old is just learning a few words. I talk to him throughout the day but I put on YouTube while I am in work meeting. I cannot find any good American educational videos. There are some Australian ones we really like and my son stays focused. It shows you the animal in cartoon, then in reality and names them. But because of the accent my son says Bear in an Australian accent vs American. Lol should I be concerned??