Earlier quoted context omitted.
> You can't make it much more frequent because the amount of time for the difficulty has to be balanced against propagation time for blocks or else you will have lots of forks. The same problem also limits block size, since large blocks take longer to propagate. But that's why Ethereum went with GHOST, which was originally proposed for Bitcoin. Instead of choosing the block with the most hashpower behind it, you choo…
Ethereum abandoned ghost because of its amplification of selfish mining. Inclusion of 'uncles' does not increase block selection weight there.
https://ethereum.stackexchange.com/questions/38121/why-did-e...
...which says Ethereum actually uses a version of the "Inclusive Protocol," which according to its paper has similar advantages:
https://www.cse.huji.ac.il/~yoni_sompo/pubs/15/inclusive_ful...