This is a pointless argument, since both views are "correct". Even Joe Armstrong says that
"You can take two views, you can say that either erlang isn't object oriented... [or] you can say its more object oriented than all the object oriented languages."
But I do not think it's very useful to say that Erlang is object oriented, since it will confuse a lot of people, since it is not anything like the other "object oriented languages".
http://www.infoq.com/interviews/Erlang-Joe-Armstrong http://www.infoq.com/interviews/johnson-armstrong-oop