I'm experiencing this as well and it almost seems a bit more malicious than what is described. I noticed the addon pack installed two days ago and uninstalled. I had to reinstall the addons this removed. I then check my addons today and there is an addon pack called "project-403048" that is now installed with the same addons included in this as well. These were both posted on Curseforge by author jeremy7600.
The weird part is I can't find either of these addons on CurseForge anymore, but Google is caching these and you can see that they existed very recently. If this was just unintentional then why would the actual addons packs keep getting removed from Curse?