Correct - just this week a new flying dragon in the store with a 6 month sub. The pity is fools will buy the sub for the mount and some of those people will be the same ones on the forum saying “Pathfinder is not so bad, I like to earn it”.
People literally continue to pay Blizzard for Pixels that we can barely use and to perform hamster games toward the end of expansions just so we can break our toys out of storage.
You are correct, Flying will never “go away” they have sold to many items from the store to do that - and those items continue to sell apparently.
What needs to happen however, is the silliness of restricting flying behind a wait of months and a silly extra grind needs to end.