What other reason would they have for experimenting with a game mode? It’s pure logical deduction. They spent well over a month attempting adjustments to it before they realized it just did not work with high mobility nor did it flow well.
They even entirely removed it until a few die hard fans requested it be re-added. To which it was added to the rotation after that. Without those few die hard fans it would have never seen the light of day again.
The compromise was arcade and obscurity.
Which indicates that it is a big enough problem that they even considered ditching 2-2-2. They aren’t going to dedicate time to something unless they are trying to fix something. If it was such a great success and the problems minor they would not have so quickly (by their own standard of “quick”) tried to experiment to fix.
There is absolutely no evidence to support it as a success. Every action of the dev’s speaks far more the words of any dev or player.
They are sweating in their boots. Doing everything they can to correct a mistake without admitting fault.