And it's also the case that even though certain brain functions are linked with specific locations, the brain can still use plasticity to re-organize things and adapt to damage. And when you're doing any language related task, there are always going to be other more domain-general brain functions involved too, which aren't as localized.
The evidence for more advanced brains in higher mammals is also plainly there.
The author seems to be over-stating all this stuff in order to reject it.