>>32832494Because people repost and don't credit, which is why nowadays this is getting more common.
It's the only way the word can get around for an artist. And for an artist this is vital to build up a fanbase.
Think about it, if you are an artist and want to build a following. You post your image and it only gets a bit of attention.
Meanwhile, instead of someone just simply retweeting/reblogging to share your art, they just repost it to boost their own follow count. The repost gets tons and tons of attention instead of the original post. The artist doesn't even get any positivity from this, no one knows their profile since they weren't credited. All it does is boost the reposter. So essentially, the artist's hard work has resulted in someone else reeling in the benefits, and they are no further in growing their fanbases.
Literally the only way to ensure they receive credit is to watermark.
>>32857891The reason it's important for fanart is because these are the pieces that get reposted, it's rarely original art.
A lot of artists draw fanart because it's how they build a following so people can become interested in their original work.
In saying this though, the OP's image is way overkill. As a result no one's going to look at it. Just make sure to have your URL or username very visible in an uncropable area, that's enough. Otherwise you're turning off viewers.