Sure, a lot of holders of bitcoin ended up advantaging financially from BCH - yet I doubt that it was really good or necessary, and there are some folks who are not technically sophisticated enough to figure out how to cash out their BCH or will they be advantaged when Coinbase finally releases coins to them in January 2018?

The BCH split is what it is and end up with some people profiting, but I still would not characterize it as a good thing for bitcoin as a whole... even though it may prepare core for some of these kinds of attacks and it may prepare some of the bitcoin community, too, in order to identify these attacks for what they are.. perhaps?