Separate vermicomposting or all-in-one compost pile?

I've practiced vermicomposting for years with my students in my classroom, but at home, we've always thrown our kitchen scraps straight into the compost pile, mixing it in with lots of yard waste and leaves.  But a few weeks ago, I was watching a conference by a permaculture speaker (I forget who it was) who was saying that it's a lot better to keep kitchen scraps away from yard waste and to compost them separately in a worm bin.  I'd like to know what you all think of this?  What are the pros and cons to each approach?

Howdy Jean, I can think of a couple of things that might be a reason that I would keep them separate.

Compost piles, if working properly, will go through two temperature profiles that I think might be uncomfortable for worms.

Vermacompost is such a wonderfully special kind of compost that It is a treasure , not to be mixed with plain old compost.

I am not sure why the speaker would separate the kitchen scraps from yard waste. I have composted and vermacomposted with both, together and separate.