QM potentially answers cool philosophical questions like, "does cut & paste transportation preserves identity" (it looks like it does, for our universe doesn't seem to encode any identity at all).
Neurology will most probably tell us nearly everything we will ever know about how humans actually work. I expect many questions formerly considered "philosophical" will be answered by this piece of science.
Therefore, I think nearly all philosophers need to know some QM and neurology.
I agree with your first statement.
However, as for your second statement, I would really like an example, because I am not entirely sure what you mean. (I am sincerely requesting examples.)
Unfortunately, I strongly disagree with your third statement. The time it would take to learn QM with sufficient rigor to be interesting could be better spent reading the findings of experimental psychology or learning more mathematics. For the majority of philosophers, their subject matter simply does not overlap with QM in such a way that knowing rigorous QM would help ...
I'm sure most of us are used to just being able to badger him about things in the comments here on LW, but for anyone interested here's the link.