The very simple solutions to this problem is to not use imgur until they relent or change their policy. It is a stupid excuse to blacklist FC anyway and I am NOT installing an addon just so I can view imgur pics. Imgur offers nothing that the other image hosters don't, and they are only hurting themselves by blocking a huge number of advertising opportunities.
Sometimes we have to vote with our feet, folks. It's a good lesson. Most of the time I just see the image tag I don't bother going out of my way to see it so posters that continue to use imgur are just limiting their audience. Entirely up to them.
So, just as a data point, here is a tinypic test post I made here in the sandbox thread soon after joining this forum in 2014 that is still available, so tinypic is no fly by night hoster...