No. Anonymous or pseudonymous participation is not permitted on Objection.
All participants—Objectors, Investigators, and Authors—must be identifiable and accountable. Transparency is a prerequisite for credibility.
However, Investigators have some flexibility around public attribution. While all submissions are internally attributable and reputation is tied to a persistent identity, public display of your name on cases can be configured. Abuse cannot be concealed through any anonymity settings.
The key principle: identity is required, but public exposure of your identity is configurable for Investigators.