i simply think if you are aware you accidentally create misinformation online the least you should do is lock the post with misinformation so it cant get thousands of reblogs from people who wont fact check it lol
“So You Just Fearmongered Online” helpful guide
image: gif demonstrating the process of locking a post from the edit/new post screen on desktop: click on the gear in the top right corner, scroll down to “who can reblog”, and change it from “anyone on tumblr” to “no one”. end ID.