As a VP of UX I'm sure that along with user feedback you also gather tons of metrics about how your apps are used. I'm sure as an experienced VP of UX you also understand that lots of people just hate change and they will complain about it, even if the changes are positive.
The forum makes up a tiny percentage of Evernote users, whilst the feedback is definitely interesting and useful, people shouldn't get carried away into thinking a few dozen people complaining here equals a mass exodus of users. Take a look at any of the dramatic "I'm leaving and I'm not coming back" threads on this forum and there are as many posts from users who have left and come back as there are throwing their toys out the pram.