Depends what you class as spotting -
I don't class taking great photos of aircraft doing their thing as being spotting - mind you I mean military aircraft - nothing interesting about civvy airliners flying straight and level.
But I do know of a civvy ATCO who is a real spotter. He notes down reg numbers and scores them off in a book.
Seemingly there is a large loose-leaf publication with all the worlds aircraft reg in it, which is updated yearly. He gets a new copy every year for his Christmas, then spends the next few days cross referencing the old and new book so that he can score of all the aircraft he has seen in his new one.
That's what I call spotting