It's been a while ever since they pulled a ToS changed that tanked its userbase to no longer accept NSFW on the platform.
When saving tumblr blogs, I've noticed they've now added a hotlink detection on their images. If you obtain the image URL, and enter it in you browser, it takes you to the image file as expected. BUT if you refresh that page, now takes you to a page of the image (notice the buttons around the image), under that same image URL. Saving these image URLs directly are ineffective (because it will try to save a page of the image recursively and fail, resulting in displaying a broken image icon), but saving the blog page may successfully save the images. You have to repeatedly save the blog page multiple times in hopes it finally saves the image.
I'm writing this to inform fellow users saving tumblr images.