No you're not. Archive.is is a genuine archival website; nothing there is fabricated. There is solid evidence of that thread existing and you having made it.
I would suggest that you leave this forum and not come back; you won't get any sympathy here.

Also, that 'hotshot' that you're arguing with is Staff and can still see the deleted thread if it is in the Trashcan. Trying to call them out on it is a stupid thing to do.