Whitelist g_ca_spectate_enemies
disabling this g_ca_spectate_enemies cvar doesn't stop ghosting problems in public games if players really want to ghost when admins aren't present to enforce anything as team changes are instant and freecam spectating is allowed. This cvar only affects sweaty competitive games with VoIP connections which no one plays and this cvar can be disabled there by the admins who also moderate players' teamswitching to prevent exact hp ghosting, freecam is still an issue there.