I don't know how neuroscientists fare wrt knowledge of biology, chemistry, etc. that is relevant to their field, but the real problem is when they wade into philosophical waters without the requisite philosophical chops or background to do so [0].
Others can be guilty of similar sins, of course, and since the early 20th century, when philosophy and the classical liberal arts in general evaporated from school curricula, scientists have generally been quite poor at this, despite unwittingly treading into subject matters they are ill-prepared to discuss. Compare how a Schroedinger or a Heisenberg[2] talk about philosophical stuff, and then look at someone like Krauss [3]. The former may not have been great philosophical thinkers, but there is a huge difference in basic philosophical education and awareness, and these are not just isolated cases.
[0] https://edwardfeser.blogspot.com/2011/01/against-neurobabble...