late to party.. but since i run into this problem a lot on vpn and imgur is annoying..

anyone who doesn't care, ignore this.

but for anyone who needs it, you can setup redirects to avoid imgur and use one of the libre-front ends (think like piped/invidius are for youtube but there are similar for reddit/imgur/etc). i use the redirector addon linked below to setup redirects so imgur links automatically go to the front-end instance i want.

addon settings (adjust for your preferred instance):

Description:  imgur to nohost.network (MX rimgo instance) redirect
Include Pattern:  ^https?://(?:\w+\.)?imgur.com/(\w+)(?:\.\w+|/)?$
Pattern Type:  regular expression
Pattern Description:  match for imgur embedded file or page url, ignore sub-domain and ext
Redirect to:  https://rimgo.nohost.network/$1
Example URL:  https://i.imgur.com/IniKMpC.mp4
Example result:  https://rimgo.nohost.network/IniKMpC

refs:

• https://codeberg.org/rimgo/instances
• https://github.com/mendel5/alternative-front-ends#imgur
• https://www.einaregilsson.com/redirector/