Ignore the idiots from retail saying "oh classic isn't that popular" the last few months people have had NOTHING BUT classic to play if they play it.. and its burnt out quite a few people who are dedicated to the game, some have left for good finding something else to do, others have gone outside and are making the most of being able to see friends again.
The people will bounce back with AQ and afterwards the drop wont be as big, as AQ requires quite abit more attention to keep clearing.