If you're concerned about it, it's probably worth discussing with the right kind of lawyer, whatever that is. It might cost a couple hundred bucks, maybe more if you have a ton of questions, but it's worth it to know what they might try to get you on and how.

Alternatively, exclusively publish and communicate over tor for anything even slightly related to the project, never share a photo or personal information of any sort, and generally remain untraceable. Downside is if they're interested and watching, you only have to slip up once.