Did you read the post to the very end?
I don't see anything immoral, he just spotted a weakness in Patreon, warned Patreon and wrote a blog post about it. Nothing wrong here.
The author makes no mention of warning Patreon about this weakness, unless you're counting this blog post as the warning.
They clearly attempted to impersonate the original owner of the page, using a description and artwork suggesting they were the original owner.
The second to last paragraph features the author fantasizing about how much money they could make by defrauding people. Quote: "This plan could be pretty profitable!"
Like yeah, in the end they took down the page and refunded the patron. But the author made the wrong choice at essentially every step prior to that moment.
The author didn't just "spot a weakness in patreon", they attempted to (and managed to) commit wire fraud. The fact they had little success and later returned what they stole is relatively little consolation.
The author makes no mention of warning Patreon about this weakness, unless you're counting this blog post as the warning.
They clearly attempted to impersonate the original owner of the page, using a description and artwork suggesting they were the original owner.
The second to last paragraph features the author fantasizing about how much money they could make by defrauding people. Quote: "This plan could be pretty profitable!"
Like yeah, in the end they took down the page and refunded the patron. But the author made the wrong choice at essentially every step prior to that moment.
The author didn't just "spot a weakness in patreon", they attempted to (and managed to) commit wire fraud. The fact they had little success and later returned what they stole is relatively little consolation.