In 2020 I got banned from e621 for only negative downvoting a comment- an e621 Moderator by the name of "Knotty Curls" made.
The moderators there are powertripping assholes, I recommend not using e621 the website is really bad.
[here are some better alternatives]
(has alot of amazing Japanese furry kemono artwork)
(great for looking up collection of artwork or comics)
(same as e-hentai but has rare & hard to find artwork. you need to first have created a e-hentai account to use this website)
The Permanent Booru: http://owmvhpxyisu6fgd7r2fcswgavs7jly4znldaey33utadwmgbbp4pysad.onion/
(requires the use of tor browser to open the .onion link, contains a backed up archive of most artwork)
(Most artist are moving their artwork over to Twitter, so even if you are like me & despise social media , I still recommend creating a Twitter account to view artwork).Post too long. Click here to view the full text.