Can you take a screen shot and post it? I can't imagine this is only happening to you with a few posts, right? I mean you ruled out that it was someone's signature before asking, right?
Willful ignorance of science is not commendable. Refusing to learn the difference between a credible source and a shill is criminally stupid.
After some certain period of time, you can't edit your posts anymore and it becomes set it stone. I don't remember what I set it to but I do know that you can't edit a post you made in June (which is the one you're talking about here).