As it was not an attack on BTC (any BCH pump seems very suspicious for me) that can be concidered as a some kind of correction after a pretty big growth. I'm sure that it is pretty good and it will help from the psychological side: a lot of people are waiting for the end of this year to see the final BTC rate and they can easily dump it especially if it is uncorrected. If bitcoin will continue its slow growth it will just make the situation more calm.
People always seeks and speculates on what would be the ATH of the bitcoins reached with the end of this year, but we never knew the exact score with it but let's speculate good since their are so many fork coming with btc and that could give more hype for bitcoins and possibly we can see it surpass to 20k$ level or maybe it will be even more.