Huh? Vegetarians can have animal by-products, just not the animal itself. Its vegans that can't have the by-products such as milk, eggs, etc.
There's all sorts of "vegetarians" out there, and without quizzing the crap out of the OP, I just simply advised that if you want a vegetable sourced protein powder...soy isolates are available. If it does not matter to the OP...then whey should be fine. In addition there are egg & milk protein powders which I did not mention. These are good sources too.
But i can see how my wording in the other posts may have caused some confusion in what I was trying to say.