Depends on how you define OO. My own definition of object involves identity and corresponding encapsulated state, which is something that Haskell doesn't support directly (since identity isn't pure).
So, what OO is all about will depend which researcher gets asked.
Yes, we can use less currently mainstream (note: not less correct) definitions of OO, but that doesn't help the Scala=OO+FP position.
Jump dump what is being worked on at any given point in time?
For me it is hard to grasp how youngsters see OO or FP, because I was part of the initial mainstream waves. So I got to see the things in a different perspective.
The world at companies was procedural, and lots of experimentation was going on.