Lemmy.world (where OP's account is) has a rule 3 stating:
No posts or comments supporting or promoting QAnon related content or similarly disproven conspiracy theories. Moderators have sole discretion to decide if a post violates this rule. Birds are real. The Earth is round. Get over it.
See https://mastodon.world/about (both world servers are maintained by the same admin team, and lemmy.world links to that page for its rules).