It should be super easy to just have a script listening to a bunch of relays and replying to every one of them with a new random public key and copying their note content. It could also have a different name every time to confuse people more.

The ReplyGirl attack required some AI magic to generate the pictures and texts, so it's more expensive, but probably an overkill as just random text and picture would work the same and be even more annoying.