CKEditor - deactivated/hidden as default setting

Does anyone know a way either with a tool or hard coding  where I can set the CKeditor as deactivated as default (on login)?

The issue is when using mobile and small laptop screens the editor takes a lot of screen space, and having just a small standard comments box is fine, then it's up to the user to toggle the edit on/off if they want it, but bcs its on as default it looks a little overwhelming to the non-tech user.

thanks for any help you can give!

Rich