>>41769990Lando is a versatile mon that fulfills multiple roles that is easily splashable on most teams. Putting the question of whether it was banworthy aside, it is easy to see why such a mon would be widely used.
However, Ditto is not flexible. Ditto does not fulfill multiple roles. Ditto does not have several viable sets. Ditto is and always was a meme. It has a completely linear gameplan who's singular use is to revenge kill an out of control setup sweeper. A panic button that by placing on your team made you actively weaker except for the singular situation in which it excels.
The fact that this one trick pony has HIGHER usage rates in high ELO than the very poster child of versatility itself ever did should tell you that something is up.