I was about to update my thread by replacing the broken imgur images, but found out that all of them have been restored.
Not much, only 1 topic on the sub board and 1 topic on the local board which was completed in my plan to fix all the damaged images due to using imgur which has an important meaning in the topic or quotes and replies that I made, it turns out like this information that all the images have been restored.
Seems imgur guys have realized that most of their users are from bitcointalk and reddit. I hope there will be no change again on imgur so it saves my time to update all of the unrestored images for my clients.
I think they realized from the start that the percentage of users who use imgur's service is dominated by users from this large forum amidst the many services that are the same as theirs.
When the imgur people made a decision that caused all the broken pictures in the forums, there were forum users who rushed to find solutions like TryNinja and even joker_josue had created the image hosting site TalkImg.
However I prefer to use talkimg instead, at least for now, to avoid double effort if someday imgur makes another joke in future.
I'm sure imgur people won't make new jokes anymore because as we discussed above maybe they realize that many users of this big forum use imgur to make imgur even more famous.
Maybe, not a certainty.
By the way, the changes made by imgur can help designers who have used imgur in their work from the start.