How is it spammed? Do you actually think those bch guys are actually spamming small transactions and paying the current fees? It does not matter if they use 0.000001 sat/byte as it will just go to the bottom of the barrel and I don't think anyone can afford to spam with 2-8$ fee each time.
The problem lies in actual people who are using bitcoin regularly, who sent using normal transaction fee's of 30-320 sat/byte, got no confirmation then half the machines doing the mining joined the bch craze, which in turn increased bitcoin conf. fees => normal users who paid normal fees got the shaft waiting 3 days already.
I don't think no one is spamming anything, all the action moved to the other shit and there's nothing we can do unless that other shit, as in bch, drops in value or difficulty increases. Bitcoin is weak for allowing this shit to happen in the first place. It only hurts the actual people using the damn thing on a daily basis.