Part of the Furniture
I see no reason why that site should be blocked, its image hosting is used extensively by many. I remember back when one reddit user announced to code it just to allow non-obnoxious image hosting for that platform.Just an FYI on the image hosting site you are using. I currently am using CleanBrowsing for DNS, and they are blocking i.imgur.com (and imgur.com). So, all I get for the posted images now is a '[ IMG ]' placeholder. Since CleanBrowsing is one of the options made available by default in Asuswrt-Merlin, I'm not inclined to switch it off entirely or make any exceptions for any devices (I know I can do so easily enough via the DNSFilter tab in LAN). I also know this is my choice, but wanted there to be an awareness none-the-less. Thanks!
Most other image hosters suck, while I admit that in the past years imgur got a bit overboard with how they display content.
Nonetheless, the site is still my preferred image hoster and I have no plans to change that.
Try to get in contact with the CleanBrowsing guys and ask for reasons.