If they continue to fork and fork and fork, Bitcoin will definitely rise along for as long as there are free coins after the forks. The mentality is always in favor of the free give-aways. If people are even exerting effort in trashcoins being airdropped, how much more in the coins from Bitcoin's forks. That would be much juicy even if it will arrive at Bitcoin Stone, Bitcoin Soil, Bitcoin Mud, and so on. At the end of the day, Bitcoin will be forgotten because of a thousand forks.