Because of a group of cute electronic cats from Canada. These people are simply geniuses, blockchain such a small capacity actually used to develop the game. As a result, the ETH blockchain was completely blocked by cats and almost no transfer was possible for all ETHs and ERC20 TOKEN.
I think you are talking about this https://www.cryptokitties.co/I just gone through how they works here in this article and looks like it is just another token with cat face nothing more https://www.inverse.com/article/39058-cryptokitties-makes-ethereum-approachable
And looks like total number of token/kitties is unlimited, do you really think people are going crazy for this digital toy
If this alone is causing pathetic congestion on ETH network than it needs some scaling solution first before bitcoin
