I don't know how Federenko squares this view with her own work which directly contradicts it [1]. In this work, they find that the language network activated for "meaningful" non-linguistic stimuli such as the sounds of someone getting ready in the morning (e.g. yawning, brushing teeth, etc.). It seems entirely contrary to her arguments in this article and she doesn't even acknowledge it.

[1] https://direct.mit.edu/nol/article/5/2/385/119141