So to explain. I was thinking in the first place that he was hacked. He wasn't. I invited him to a live scratch project, and he told me that this was just to promote SPRITE3. And I told him to do what you saw in this project: https://scratch.mit.edu/projects/1146906477/ And I just went with the flow. It started to get annoying so I had to end it.
In conclusion, @Stick_Purple was not hacked And tbh. Being hacked by SPRITE3 sounds ridiculous...