Everybody who wanted to sell XMR because he anticipated Zcash launch could hurt the XMR price, already did it a while ago. Now there is some disappointment about Zcash all over the Internet, because only 6 persons have created the trusted setup.
Now add the XMR GUI to the equation...will be interesting.
Curious where you are seeing this, I saw one comment in the ZEC subreddit. Didn't see much in the official forum.
It is interesting that zcash shut down the original reddit forum.