Imgur blocking Adult/NSFW content is most likely influenced by their monetization strategy.

You know why they (and Tumblr/IG) want to block Adult/NSFW content?

Ads. Advertisers don't want their ads (and brand) to be associated with adult/NSFW content.

We aren't beholden to advertisers, and embrace freedom of expression. We have no plans to ban NSFW content.

#pixelfed #imgur #nsfw

@gbraad pixelfed.social has supported nsfw content since the beginning. As long as it's properly tagged, and doesn't violate any applicable laws, it's fine.