I'm currently having another look at Evernote for at least some of my files / notes.
(I used Evernote around 2011 but drifted over to OneNote and stayed there till now.)
To me, this seems pretty necessary as well.
If I wanted to switch all my notes over to Evernote some of them would be pretty personal. Sure, I could log out of Evernote, but in day-to-day life this isn't always practical (working and moving back and forth from the laptop, especially working with a group of people) and in my experience people often forget to lock even their screens.
Evernote even offers a presentation mode, only really useful with a beamer.
I wouldn't want to click the wrong notebook and have it open. I also want an extra layer of security on top of certain files / notes, if my device is ever stolen or somebody looks around as I left the table and forgot to lock the screen. Or even allow somebody to use it and forgot that the evernote-app isn't logged out. Stuff like that happens.
Simple fact: As long as this feature doens't exist, Evernote won't be able to become the single place for all my notes / writing / files that the company would probably like to be.
(And that I would like to have... It doesn't sound like fun to mix evernote for their search, OneNote for encrypted notebooks with many notes and attached files, and VeraCrypt-files for stuff that's just kept for documentation and doesn't need work.).
Apart from that, I consider the lack of comments about such a common customer-wish a horrible signal. After some scrolling in the forums, this seems to be pretty normal.
This information-void doesn't feel good. Any type of information would be better, in my opinion. As an old, former user looking back I really hope this changes with the new CEO.
Maybe Evernote wants to index everything and their image of a digital brain storage with strong search doesn't allow for this. Okay, then why not make an understanding but firm and eplaining statement about it?
(Edit, additional thought: Even though I wouldn't agree with this argument. Especially with sensitive files I know the things I filed away, and don't mind to browse a little while longer to find it manually.)
Or the database is just not structured for it and the necessary changes are too big? Okay, but why not let me know so I know what to expect / not to expect?