Yeah. I don't do anything on my phone that I don't assume is tracked. It's a good rule to live by. False sense of privacy in things like Signal or otherwise are just that. If you can visually see the text or images on your phone assume it's going to Palantir. If you have a burner phone. It's associated with you if you so much as bring it near your personal phone.

Being paranoid and assuming everything digital is watched is the only real security you can have.