Yes.
I know there are subjects that are quite easy to get away with, such as Society and Culture, where the PIP component can be quite simple to make up people in your secondary research such as people you supposedly ''interviewed'' etc.
I just thought English was quite the same in terms of risk factor like History, but I guess it is easy to get away with. I am guessing people may make up some foreign text that no one has heard about? And it is true not all texts would be online, but if there is not even a trace of a title at least or something, wouldn't that be suspicious?