Imgur now blocks several VPNs and have issues loading embedded previews in several fediverse platforms. So instead of using imgur, you could use one of the following alternatives for uploading your images.
https://postimages.org/
https://imgbox.com/
https://imgbb.com/
https://www.imagebam.com/
Aren’t other file/image hosts just as vulnerable to DMCA takedowns? I mean, they have to comply with their host country’s law, too.
In theory, yes. In practice, no. E.g. Russia is known to ignore DMCA takedown requests and there is nothing anyone can do about it.