I definitely came away from Tinco's original comment with the icky feeling that a) Tinco's a little too thrilled with how super interesting and intellectual he is, and b) Tinco doesn't have much respect for his girlfriend's interests, and c) Tinco takes it for granted that Google should know that a single person couldn't possibly be interested in the union of those interests, probably because it should know that all the physics and programming and philosophy stuff is "boy stuff" and the rest is "girl stuff".
gberger seems to be reacting (in a slightly less than constructive way) to that same uncomfortable sense.
I thought tinco was saying that Google should know that two parallel threads of research going on at once from separate devices implied that at least two separate people were using the same account.
I read it as a literal example - tinco saw those exact examples.
gberger seems to be reacting (in a slightly less than constructive way) to that same uncomfortable sense.