When I ignore a user and someone else quotes him, shouldn't I get that post ignored too? What's the purpose of ignoring a user if you don't get rid of him completely? I usually choose to ignore users so that I prevent from stumbling across their discussions again. Otherwise, I find it pretty meaningless.
Nope, you can not.
Ignore feature works the same for deleted posts or display name change (?). You will see full content of posts or deleted posts of ignored users. I remember
I checked, it is correct that even a user changed display name (by admin), in quoted posts, the previous/orginal display name will still be shown.
In addition, if you click on post history of Ignored user, you will still see all post content. I don't know how it is designed on the forum.
I guess it is similar to the hidden feature. Click on post history, and post with image from newbies, then you will see images. By default, images are disabled if they are posted by newbies, but if you check that post in post history, images will be displayed.