I've also been asking for more control over displayed content for ages; waiting around for the admins to implement important safety and sanity features is in my experience usually a lost cause, but if you're in search of a work around, here's the CSS I use so I can (more) safely browse mod pages on my phone when out in public. This of course only works on Old Reddit.

You'll need a browser extension to use these, like Stylish, or I think RES or Toolbox or something allows customizing CSS too (though I don't remember for sure).

Simplified version to only blur NSFW images on user profile pages:

body.profile-page .link[data-nsfw="true"] .thumbnail img {
    filter: blur(5px);
}

For anyone who has a need to see the NSFW thumbnails, this version will show them on hover; it'll also show all of them if the page URL ends in #siteTable (I have a toolbar button to add this, and some bookmarked that way):

#siteTable:not(:target) .link[data-nsfw="true"] .thumbnail img:not(:hover) {
    filter: blur(5px);
}